{"product_id":"twinstim-plus-4-channel-tens-ems-ifc-russian-unit","title":"Richmar Twin Stim Plus DS5402 | 4-Channel TENS, EMS, IFC \u0026 Russian","description":"\u003ch2\u003eRichmar® Twin Stim® Plus 3rd Edition DS5402\u003c\/h2\u003e\n\u003cp\u003eThe \u003ca href=\"https:\/\/www.balego.com\/products\/twinstim-plus-4-channel-tens-ems-ifc-russian\"\u003eRichmar Twin Stim Plus DS5402\u003c\/a\u003e is a portable electrotherapy device with four channels that combines TENS, EMS\/NMES, interferential current, and Russian stimulation in one compact system.\u003c\/p\u003e\n\u003cp\u003eFour electrically isolated output channels and individual intensity controls let clinicians use up to eight electrodes for broader coverage, bilateral placement, or multiple treatment areas. The unit also includes two treatment timers, adjustable stimulation parameters, an LCD screen, battery or AC operation, and a patient-compliance meter for reviewing treatment-use records.\u003c\/p\u003e\n\u003cp\u003eThe DS5402 is particularly well suited to physical therapy clinics, chiropractic offices, rehabilitation departments, athletic-training rooms, sports-medicine programs, and professionally directed home treatment plans that need more electrode coverage than a standard two-channel device. Richmar identifies four therapeutic categories, five TENS programs, three EMS programs, three interferential programs, and three Russian programs.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eSale by or on the order of a physician or licensed practitioner. It should be used under the continuing supervision and instructions of a qualified healthcare professional. \u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003eFor complete setup, parameter selection, safety information, electrode instructions, compliance-meter directions, and troubleshooting, read our \u003ca href=\"https:\/\/www.balego.com\/blogs\/device-user-manual-setup-safety-and-specs\/twin-stim-plus-3rd-edition-combo-stimulator-ds5402\"\u003eTwin Stim Plus DS5402 instruction-manual guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eProduct highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFour electrically isolated output channels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndividual intensity controls for Channels 1–4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTENS sensory-stimulation programs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEMS\/NMES muscle-stimulation programs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFour-electrode interferential-current capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRussian medium-frequency burst stimulation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFive TENS modes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThree EMS modes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThree IF modes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThree Russian modes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTwo treatment timers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdjustable pulse rate and pulse width\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdjustable contraction, relaxation, and ramp settings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePortable battery operation using four AA batteries\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAC adapter operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLarge LCD screen\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow-battery indicator\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePatient-compliance meter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStores 60 treatment-use records\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStores up to 999 hours of accumulated use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncludes eight reusable 2-inch-square electrodes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncludes four lead-wire sets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCarrying case included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOne-year Richmar warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe four modalities are adjustable parameters, dual timers, a compliance meter, included accessories, and a one-year warranty. The manual documents the record capacity and accumulated-use total.\u003c\/p\u003e\n\u003ch1\u003eQuick specifications\u003c\/h1\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eTwin Stim Plus DS5402\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRichmar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct family\u003c\/td\u003e\n\u003ctd\u003eTwin Stim Plus 3rd Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\/SKU\u003c\/td\u003e\n\u003ctd\u003eDS5402\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDevice type\u003c\/td\u003e\n\u003ctd\u003ePortable prescription electrotherapy stimulator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput channels\u003c\/td\u003e\n\u003ctd\u003eFour, electrically isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndividual intensity controls\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain modalities\u003c\/td\u003e\n\u003ctd\u003eTENS, EMS\/NMES, IF, and Russian\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTENS programs\u003c\/td\u003e\n\u003ctd\u003eBurst, Normal, Modulation, SD1, and SD2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEMS programs\u003c\/td\u003e\n\u003ctd\u003eConstant, Synchronous and Alternate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIF programs\u003c\/td\u003e\n\u003ctd\u003eNormal, Modulation and Modulation 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRussian programs\u003c\/td\u003e\n\u003ctd\u003eNormal, Modulation and Modulation 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaveform description\u003c\/td\u003e\n\u003ctd\u003eSquare-pulse output; see current product labeling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput specification\u003c\/td\u003e\n\u003ctd\u003e0–40 V peak-to-peak at a 500-ohm load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTENS\/EMS rate\u003c\/td\u003e\n\u003ctd\u003e2–150 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTENS burst rate\u003c\/td\u003e\n\u003ctd\u003e0.5–5 bursts per second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIF carriers\u003c\/td\u003e\n\u003ctd\u003e4,000–4,150 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIF difference frequency\u003c\/td\u003e\n\u003ctd\u003e1–150 Hz, depending on program\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRussian carrier\u003c\/td\u003e\n\u003ctd\u003e2,500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRussian burst frequency\u003c\/td\u003e\n\u003ctd\u003e20–80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePulse width\u003c\/td\u003e\n\u003ctd\u003e50–300 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRamp time\u003c\/td\u003e\n\u003ctd\u003e1–8 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn time\u003c\/td\u003e\n\u003ctd\u003e2–90 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff time\u003c\/td\u003e\n\u003ctd\u003e0–90 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTreatment timers\u003c\/td\u003e\n\u003ctd\u003eTwo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTimer grouping\u003c\/td\u003e\n\u003ctd\u003eCH1–CH2 and CH3–CH4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTreatment duration\u003c\/td\u003e\n\u003ctd\u003e1–60 minutes or continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance records\u003c\/td\u003e\n\u003ctd\u003e60 treatment records\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccumulated record capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 999 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery power\u003c\/td\u003e\n\u003ctd\u003eFour AA batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC-adapter output\u003c\/td\u003e\n\u003ctd\u003e9 V DC, 800 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e13.8 × 7.8 × 2.8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApproximate dimensions\u003c\/td\u003e\n\u003ctd\u003e5.43\" × 3.07\" × 1.10\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e425 g with batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eOne year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eU.S. sale status\u003c\/td\u003e\n\u003ctd\u003ePrescription device\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch1\u003eHow the four channels operate\u003c\/h1\u003e\n\u003cp\u003eThe DS5402 has four isolated output channels, and every channel has separate intensity-increase and intensity-decrease buttons. One electrode pair may be connected to each channel. \u003c\/p\u003e\n\u003cp\u003eHowever, four isolated channels do not mean four completely separate programmable treatments.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eChannel behavior\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntensity\u003c\/td\u003e\n\u003ctd\u003eIndividually adjusted for CH1, CH2, CH3, and CH4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelected modality\u003c\/td\u003e\n\u003ctd\u003eChosen through the device’s central Mode control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgram settings\u003c\/td\u003e\n\u003ctd\u003eSelected centrally for the active therapy mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLeft timer\u003c\/td\u003e\n\u003ctd\u003eControls CH1 and CH2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRight timer\u003c\/td\u003e\n\u003ctd\u003eControls CH3 and CH4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIF carrier pairing\u003c\/td\u003e\n\u003ctd\u003eCH1 pairs with CH2; CH3 pairs with CH4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum connected electrodes\u003c\/td\u003e\n\u003ctd\u003eEight, using four electrode pairs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eExamples of four-channel flexibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFour electrodes around one treatment region\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEight electrodes across a broader region\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSymmetrical right-and-left placement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTwo bilateral muscle groups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTwo separate TENS regions using the same selected program\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOne four-electrode interferential field using CH1 and CH2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA second four-electrode interferential field using CH3 and CH4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eExact placement and channel selection must follow the prescription, device manual, and clinician’s treatment plan.\u003c\/p\u003e\n\u003ch1\u003eTherapy modes explained\u003c\/h1\u003e\n\u003ctable style=\"width: 100.036%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 19.7771%;\"\u003eModality\u003c\/th\u003e\n\u003cth style=\"width: 32.5423%;\"\u003eIntended response\u003c\/th\u003e\n\u003cth style=\"width: 47.1054%;\"\u003eManual-listed treatment role\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.7771%;\"\u003eTENS\u003c\/td\u003e\n\u003ctd style=\"width: 32.5423%;\"\u003eStrong but comfortable sensory stimulation\u003c\/td\u003e\n\u003ctd style=\"width: 47.1054%;\"\u003eSymptomatic pain-relief programs and selected post-traumatic or postsurgical pain applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.7771%;\"\u003eEMS\/NMES\u003c\/td\u003e\n\u003ctd style=\"width: 32.5423%;\"\u003eVisible or palpable muscle contraction\u003c\/td\u003e\n\u003ctd style=\"width: 47.1054%;\"\u003eMuscle re-education, spasm relaxation, disuse-atrophy programs, circulation and range-of-motion support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.7771%;\"\u003eInterferential\/IFC\u003c\/td\u003e\n\u003ctd style=\"width: 32.5423%;\"\u003eIntersecting medium-frequency currents producing a beat frequency\u003c\/td\u003e\n\u003ctd style=\"width: 47.1054%;\"\u003eProfessionally directed pain, inflammation, and edema-related programs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.7771%;\"\u003eRussian\u003c\/td\u003e\n\u003ctd style=\"width: 32.5423%;\"\u003eMedium-frequency bursts producing structured muscle contractions\u003c\/td\u003e\n\u003ctd style=\"width: 47.1054%;\"\u003eMuscle stimulation, re-education, spasm programs and strengthening-oriented contractions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor a focused explanation of sensory versus motor stimulation, read \u003ca href=\"https:\/\/www.balego.com\/blogs\/which-modalities-to-use\/tens-vs-nmes\"\u003eTENS vs. NMES: Differences, Uses, and Device Guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch1\u003eTENS programs\u003c\/h1\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eTENS program\u003c\/th\u003e\n\u003cth\u003eHow it operates\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBurst\u003c\/td\u003e\n\u003ctd\u003eGroups nine 100 Hz pulses into adjustable bursts of 0.5–5 bursts per second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal\u003c\/td\u003e\n\u003ctd\u003eProvides continuous stimulation using the selected pulse rate and pulse width\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModulation\u003c\/td\u003e\n\u003ctd\u003eAutomatically varies pulse rate and pulse width\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSD1\u003c\/td\u003e\n\u003ctd\u003eModulates intensity and pulse width through a 40% range over a 10-second cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSD2\u003c\/td\u003e\n\u003ctd\u003eModulates intensity and pulse width through a 70% range over a 10-second cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe adjustable TENS pulse-rate range is 2–150 Hz, and the pulse-width range is 50–300 µs. \u003c\/p\u003e\n\u003ch1\u003eEMS\/NMES programs\u003c\/h1\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eEMS program\u003c\/th\u003e\n\u003cth\u003eChannel behavior\u003c\/th\u003e\n\u003cth\u003eAdjustable controls\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstant\u003c\/td\u003e\n\u003ctd\u003eContinuous output\u003c\/td\u003e\n\u003ctd\u003eRate, width, intensity and timer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSynchronous\u003c\/td\u003e\n\u003ctd\u003ePaired channels contract simultaneously\u003c\/td\u003e\n\u003ctd\u003eRamp, on time, off time, rate, width and intensity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlternate\u003c\/td\u003e\n\u003ctd\u003ePaired channels stimulate in sequence\u003c\/td\u003e\n\u003ctd\u003eRamp, on time, off time, rate, width and intensity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch1\u003eInterferential programs\u003c\/h1\u003e\n\u003cp\u003eThe DS5402 creates interferential stimulation by pairing two channels with slightly different medium-frequency carriers.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eIF program\u003c\/th\u003e\n\u003cth\u003eFrequency behavior\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal\u003c\/td\u003e\n\u003ctd\u003eCH1 and CH3 remain at 4,000 Hz; CH2 and CH4 use a selected offset, producing a 1–150 Hz interference frequency\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModulation\u003c\/td\u003e\n\u003ctd\u003eModulates through the lower 1–80 Hz difference-frequency range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModulation 1\u003c\/td\u003e\n\u003ctd\u003eModulates through the higher 80–150 Hz range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor one IF treatment field, Channels 1 and 2 supply four electrodes. Channels 3 and 4 can supply a second four-electrode field. \u003c\/p\u003e\n\u003cp\u003eThat distinction is important when comparing the DS5402 with the \u003ca href=\"https:\/\/www.balego.com\/products\/richmar-quattro-2-5\"\u003eRichmar Quattro 2.5\u003c\/a\u003e, which provides both IF-2P premodulated and IF-4P traditional interferential modes.\u003c\/p\u003e\n\u003ch1\u003eRussian programs\u003c\/h1\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eRussian program\u003c\/th\u003e\n\u003cth\u003eHow it operates\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal\u003c\/td\u003e\n\u003ctd\u003eAdjustable 20–80 Hz burst frequency with a fixed 50% duty cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModulation\u003c\/td\u003e\n\u003ctd\u003eAutomatically varies duty cycle between approximately 10% and 50%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModulation 1\u003c\/td\u003e\n\u003ctd\u003eVaries burst frequency between 20 Hz and the selected value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAll Russian modes use a 2,500 Hz carrier. Because these programs are meant to cause muscle contraction, they should be used under professional guidance, with proper electrode placement, work-rest timing, intensity, and monitoring. \u003c\/p\u003e\n\u003ch1\u003eWhat comes with the Twin Stim Plus?\u003c\/h1\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded item\u003c\/th\u003e\n\u003cth align=\"right\"\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTwin Stim Plus DS5402 device\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50 × 50 mm reusable adhesive electrodes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead wires\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAA batteries\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC adapter\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstruction manual\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrying case\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe eight included electrodes provide one starter pad for each end of the four lead-wire channels. \u003c\/p\u003e\n\u003ch1\u003eTwin Stim Plus DS5402 product comparison\u003c\/h1\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth align=\"right\"\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/twinstim-plus-4-channel-tens-ems-ifc-russian\"\u003eTwin Stim Plus DS5402\u003c\/a\u003e\u003c\/th\u003e\n\u003cth align=\"right\"\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/intensity-select-combo-ii\"\u003eInTENSity Select Combo II\u003c\/a\u003e\u003c\/th\u003e\n\u003cth align=\"right\"\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/twin-stim-iv-tens-ems-unit\"\u003eTwin Stim IV\u003c\/a\u003e\u003c\/th\u003e\n\u003cth align=\"right\"\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/tens-nmes-4-channel-rechargeable\"\u003eiStim EV-805\u003c\/a\u003e\u003c\/th\u003e\n\u003cth align=\"right\"\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/richmar-quattro-2-5\"\u003eRichmar Quattro 2.5\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd align=\"right\"\u003ePortable handheld\u003c\/td\u003e\n\u003ctd align=\"right\"\u003ePortable handheld\u003c\/td\u003e\n\u003ctd align=\"right\"\u003ePortable handheld\u003c\/td\u003e\n\u003ctd align=\"right\"\u003ePortable handheld\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eProfessional tabletop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e4\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e4\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTENS\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEMS\/NMES\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRussian\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eNo\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eNo\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFour-pole IFC\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eDevice-specific IF mode\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eNo\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eNo\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTwo-pole premodulated IF\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eNo separate mode\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eDevice-specific IF mode\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eNo\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eNo\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eFour AA or AC\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eRechargeable\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eRechargeable\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eRechargeable\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eAC power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTreatment tracking\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e60 records, 999 hours\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eTreatment-use features\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eCompliance records\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eNot the principal differentiator\u003c\/td\u003e\n\u003ctd align=\"right\"\u003ePresets and custom clinical protocols\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTimers\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eTwo grouped timers\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eDevice-specific\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eDevice-specific\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eDevice-specific\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eTwo programmable channel groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest fit\u003c\/td\u003e\n\u003ctd align=\"right\"\u003ePortable four-channel access to four major modalities\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eCompact two-channel access to four modalities\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eRechargeable TENS and NMES\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eRechargeable four-channel TENS\/EMS\u003c\/td\u003e\n\u003ctd align=\"right\"\u003eAdvanced clinic-based four-channel electrotherapy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eChoose the Twin Stim Plus DS5402 when:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFour portable output channels are important.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe treatment plan requires TENS, EMS, interferential, and Russian stimulation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEight-electrode placement may be needed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFour-electrode IFC is required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAA batteries are preferred over a proprietary rechargeable battery.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAC operation is also useful.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTreatment-use tracking is important for a professionally directed home program.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA clinic needs a lower-cost portable alternative to a tabletop four-channel system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eReplacement electrodes\u003c\/h1\u003e\n\u003cp\u003eThe DS5402 includes eight 50 × 50 mm, approximately 2-inch-square, self-adhering electrodes. Compatible replacements must accept the device’s lead-wire pins and be suitable for the selected modality.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eReplacement option\u003c\/th\u003e\n\u003cth\u003eBest fit\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/tens-electrodes\"\u003eBalego TENS\/NMES\/FES Electrodes\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAmerican-made everyday replacement pads in several sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/intensity-2-inch-square-tens-electrodes\"\u003eInTENSity 2\" Square Electrodes\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eRichmar-branded 2-inch-square white-cloth pads in a 40-electrode package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/classic-tens-electrodes\"\u003eClassic TENS Electrodes\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSoft foam, aloe hydrogel and silver\/carbon construction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/starburst-electrodes\"\u003eStarburst Electrodes\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePremium silver-gradient current-distribution design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.balego.com\/products\/dura-stick-plus-tens-electrodes\"\u003eDURA-STICK PLUS Electrodes\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eClinic-oriented replacement quantities\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.balego.com\/collections\/electrotherapy-electrodes\"\u003eElectrotherapy Electrode Collection\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eComplete size, shape and brand comparison\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eUse approximately the same electrode size originally selected or prescribed. A smaller electrode concentrates output over less skin and may feel sharper at the same setting.\u003c\/p\u003e\n\u003cp\u003eAdded conductive gel is normally unnecessary with pre-gelled self-adhering pads and may interfere with adhesion. \u003ca href=\"https:\/\/www.balego.com\/products\/spectra-360-electrode-gel\"\u003eSpectra 360 Electrode Gel\u003c\/a\u003e and \u003ca href=\"https:\/\/www.balego.com\/products\/signagel-electrode-gel\"\u003eSignaGel Electrode Gel\u003c\/a\u003e are intended for compatible non-gelled electrodes or procedure-specific applications—not routine application over reusable hydrogel pads.\u003c\/p\u003e\n\u003ch1\u003eBasic setup overview\u003c\/h1\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003eTurn the DS5402 off.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInsert four AA batteries or connect the supplied AC adapter.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInspect the lead wires and electrodes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConnect each lead-wire pin completely to its electrode.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInsert the required leads into Channels 1–4.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApply the electrodes to clean, dry, intact skin.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTurn the device on.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSelect TENS, EMS, IF, or Russian mode.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSelect the appropriate program.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdjust the available parameters according to the prescription.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSet the left timer for CH1–CH2 and the right timer for CH3–CH4.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncrease each active channel gradually using its individual intensity buttons.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduce all channel intensities before repositioning or removing electrodes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTurn the device off after treatment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch1\u003eImportant safety information\u003c\/h1\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSafety topic\u003c\/th\u003e\n\u003cth\u003eManual-based guidance\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrescription and supervision\u003c\/td\u003e\n\u003ctd\u003eUse on the order of and under the supervision of a licensed practitioner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUndiagnosed pain\u003c\/td\u003e\n\u003ctd\u003eDo not use for localized pain unless its cause or pain syndrome has been established\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImplanted cardiac devices\u003c\/td\u003e\n\u003ctd\u003eDo not use with a demand-type pacemaker or implanted defibrillator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnterior neck\u003c\/td\u003e\n\u003ctd\u003eDo not place electrodes where current may pass through the carotid-sinus region\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcross the head\u003c\/td\u003e\n\u003ctd\u003eDo not apply current transcranially\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCancerous lesions\u003c\/td\u003e\n\u003ctd\u003eDo not stimulate over a cancerous lesion in the treatment area\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInflamed or infected areas\u003c\/td\u003e\n\u003ctd\u003eDo not apply over swollen, infected, inflamed skin or eruptions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCirculatory or thrombotic conditions\u003c\/td\u003e\n\u003ctd\u003eFollow all manual contraindications and obtain appropriate medical clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSkin\u003c\/td\u003e\n\u003ctd\u003eApply to clean, dry, intact skin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriving and machinery\u003c\/td\u003e\n\u003ctd\u003eDo not use when stimulation could create an unsafe movement or distraction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater\u003c\/td\u003e\n\u003ctd\u003eDo not submerge or operate in wet environments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePain or burning\u003c\/td\u003e\n\u003ctd\u003eStop immediately and inspect the intensity, electrode contact and placement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamaged leads or pads\u003c\/td\u003e\n\u003ctd\u003eReplace before continuing treatment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch1\u003eFrequently asked questions\u003c\/h1\u003e\n\u003ch2\u003eIs the Twin Stim Plus a TENS unit or an EMS unit?\u003c\/h2\u003e\n\u003cp\u003eIt is a combination device providing TENS, EMS\/NMES, interferential, and Russian stimulation.\u003c\/p\u003e\n\u003ch2\u003eIs it a prescription device?\u003c\/h2\u003e\n\u003cp\u003eYes. It is used on the order of a physician or licensed practitioner.\u003c\/p\u003e\n\u003ch2\u003eAre all four channels independent?\u003c\/h2\u003e\n\u003cp\u003eThe four outputs are electrically isolated, and each has separate intensity controls. The device uses one centrally selected mode and parameter set, while CH1–CH2 and CH3–CH4 have separate treatment timers.\u003c\/p\u003e\n\u003ch2\u003eHow many electrodes can be connected?\u003c\/h2\u003e\n\u003cp\u003eEach channel accepts one electrode pair. Four active channels therefore use eight electrodes.\u003c\/p\u003e\n\u003ch2\u003eCan it provide two IFC treatments simultaneously?\u003c\/h2\u003e\n\u003cp\u003eThe IF program pairs CH1 with CH2 and CH3 with CH4. This can support two separate four-electrode interferential fields when prescribed, correctly placed, and professionally supervised.\u003c\/p\u003e\n\u003ch2\u003eDoes it provide two-pole premodulated interferential stimulation?\u003c\/h2\u003e\n\u003cp\u003eThe DS5402 manual describes paired-channel interferential output, not a separate two-electrode premodulated mode. The \u003ca href=\"https:\/\/www.balego.com\/products\/richmar-quattro-2-5\"\u003eQuattro 2.5\u003c\/a\u003e offers distinct IF-2P and IF-4P choices.\u003c\/p\u003e\n\u003ch2\u003eHow many timers does it have?\u003c\/h2\u003e\n\u003cp\u003eIt has two timers. The left timer controls CH1 and CH2, and the right timer controls CH3 and CH4. Each timer can be set for 1 to 60 minutes or for continuous operation.\u003c\/p\u003e\n\u003ch2\u003eDoes it store treatment-use information?\u003c\/h2\u003e\n\u003cp\u003eYes. The compliance meter stores 60 operation records and up to 999 accumulated treatment hours. \u003c\/p\u003e\n\u003ch2\u003eIs it rechargeable?\u003c\/h2\u003e\n\u003cp\u003eNo. It operates on four replaceable AA batteries or an AC adapter.\u003c\/p\u003e\n\u003ch2\u003eCan rechargeable AA batteries be used?\u003c\/h2\u003e\n\u003cp\u003eUse only battery types permitted by the current device instructions. Do not attempt to recharge batteries through the DS5402.\u003c\/p\u003e\n\u003ch2\u003eWhat electrodes come with it?\u003c\/h2\u003e\n\u003cp\u003eThe package includes eight reusable 50 × 50 mm self-adhering electrodes. \u003c\/p\u003e\n\u003ch2\u003eWhat replacement pads should I order?\u003c\/h2\u003e\n\u003cp\u003eThe closest standard size is a 2-inch-square electrode with a compatible pin-style connection. Compare \u003ca href=\"https:\/\/www.balego.com\/products\/tens-electrodes\"\u003eBalego electrodes\u003c\/a\u003e and \u003ca href=\"https:\/\/www.balego.com\/products\/intensity-2-inch-square-tens-electrodes\"\u003eInTENSity 2\" square electrodes\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eDoes it need conductive gel?\u003c\/h2\u003e\n\u003cp\u003eNo, the included pre-gelled adhesive electrodes do not require additional gel. Added gel may reduce adhesion or contaminate their hydrogel.\u003c\/p\u003e\n\u003ch2\u003eWhy does one channel feel weaker?\u003c\/h2\u003e\n\u003cp\u003ePossible causes include different electrode placement, varying skin resistance, a worn electrode, incomplete contact, a damaged lead, or a different channel-intensity setting. The manual recommends replacing dried or contaminated electrodes and worn lead wires. \u003c\/p\u003e\n\u003ch2\u003eWhy does the output feel intermittent?\u003c\/h2\u003e\n\u003cp\u003eBurst, modulation, synchronous, alternate, and work-rest programs intentionally vary output. Unexpected interruption may instead indicate a loose connection, worn lead wire, lifted electrode, or low battery.\u003c\/p\u003e\n\u003ch2\u003eCan it be used at home?\u003c\/h2\u003e\n\u003cp\u003eIt may be assigned for home use when prescribed and when the patient has been trained in mode selection, settings, electrode placement, contraindications, skin inspection, and safe operation.\u003c\/p\u003e\n\u003ch2\u003eWhat is the warranty?\u003c\/h2\u003e\n\u003cp\u003eOne-year warranty. \u003ca href=\"https:\/\/www.balego.com\/contact\"\u003e\u003c\/a\u003e\u003ccode\u003e\u003c\/code\u003e\u003c\/p\u003e","brand":"Richmar","offers":[{"title":"Default Title","offer_id":47299509879039,"sku":"DS5402","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/0570\/5983\/files\/Richmar_Twin_Stim_Plus_DS5402_four-channel_electrotherapy_device.jpg?v=1784899406","url":"https:\/\/balego-stores.myshopify.com\/products\/twinstim-plus-4-channel-tens-ems-ifc-russian-unit","provider":"Balego","version":"1.0","type":"link"}