The TENS 3000 (Item #DT3002) from Roscoe Medical is a Dual Channel, three-mode analog TENS therapy unit with built-in timer. This user-friendly, exceptional quality TENS unit boasts the latest in microprocessor technology, featuring precise dial and timer performance. A Safety Amplitude Cap comes standard, which closes the amplitude knobs to protect the user from accidental knob movements that may result in jolts of power.