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Do not base your order on the picture presented.
The popular Twin Stim Plus is a four channel TENS and EMS combo unit complete with eight electrodes. The Twin Stim® Plus gives the user the choice of five modes of TENS and three modes of EMS. Unit can be powered by four AA batteries or by AC adaptor.
Five TENS Modes: Burst / Normal / Modulation / SD1 / SD2
Three EMS Modes: Constant / Synchronous, / Alternate /
System includes device, AC adaptor, four lead wires, eight self-adhesive reusable electrodes, four AA batteries, hard plastic carrying case and instruction manual
Built in patient compliance monitor
Power Source: 4 AA batteries
Pulse Width: 50-300 µs, adjustable
Pulse Rate: 2-150 Hz, adjustable
Pulse Ramp: 1-8 seconds
Pulse Amplitude: Adjustable: 100 mA peak into 500 ohm load
Contraction Time: 2-90 seconds, 1 sec./step
Relaxation Time: 0-90 seconds, 1 sec./step
Wave Form: Asymmetrical Bi-Phase Square Pulse
Timer: 1-60 minutes or continuous