Tens 3000 Dual Channel Analog Tens Unit

Specifications
channels dual, isolated between channels
modes normal, burst, modulation
timer 15 min, 30 min, or continuous
waveform asymmetrical bi-phase square pulse
pulse amplitude 0-80ma peak to peak into 500-ohm load each channel
pulse width adjustable 30-260 us
pulse rate adjustable 2-150 Hz
voltage 0-40 v
max charge time: 20 micro-coulombs