Same unit as PP7745-11 with special special electrical inspection of the laboratory QPS (CSA equivalent). A requirement of some institution. Feature a TENS and Muscle Stimulator combo unit complete with Self-Adhesive Electrodes Digital Display Dual channel stimulator with easy access dials and buttons, integrated timer function and excellent battery life. Features standard TENS modes: Burst, Normal, Modulation, SD1 (40%), SD2 (70%). EMS modes: Synchronous and Alternating. Alkaline 9 volts battery included.