EV-807(C) is a Digital EMS with graphic on the LCD showing the status of stimulation. The user can see if the stimulation is at Contraction, Relaxation or Ramp status. Wide range of contraction time, relaxation time, ramp time, pulse rate, pulse width and a timer of 1-60 minutes are available. A compliance meter allowing physical therapist to check the accumulated treatment time. A protection cap on the top of unit is available by order. Channel: Dual, isolated between channels Pulse Amplitude: 0-90mA peak to peak into 500 ohm load. Pulse Rate: Adjustable, from 1Hz ~ 150 Hz, 1 Hz/step Pulse Width: Adjustable, from 30 µs ~ 260 µs, 10 µs/step Contraction Time: Adjustable, from 1 ~ 30 seconds, 1sec./step Relaxation Time: Adjustable, from 1 ~ 30 seconds, 1sec./step Ramp Time: Adjustable, from 1 ~ 6 seconds, 1sec./step Timer: Adjustable, from 1 ~ 60 minutes, 1min./step Wave Form: Asymmetrical Bi-Phasic Square Pulse Voltage: 0-40 V peak into 500 ohm load Size: 100(H)X 60(W) X 21(T) mm