PMI 7000 Digital Transcutaneous Electric Nerve Stimulation Unit PMI 7000 Digital TENS unit is proven to be among the most durable and easy to use. Second edition. Providing drug-free pain relief for sore or aching muscles of the lower back, shoulder, arm, leg due to strain from exercise and normal activities. Modes: Burst, normal, modulation, SD1 and SD2. Dual channel for use with two or four electrodes. Pulse width and a pulse frequency are adjustable. System includes device, lead wires, four self adhesive reusable electrodes, 9V battery, hard plastic carrying case, quick start guide and instruction manual. Compliance meter, 60 records up to 999 hours. Low battery indicator. One-year warranty. FDA cleared for over the counter sale. Pulse amplitude: Adjustable, 0-100ma at 500ohm load each channel. Pulse rate: Adjustable, 2Hz to 150Hz.