TENS machines are equipped with multiple TENS treatment modes for immediate relief of muscle pain. It is a first-class leader with all the electrotherapy machines and muscle electric massagers needed for TENS treatment. The pulse amplitude or intensity level can be adjusted in 10mA increments in the range of 0-100mA, controlled by the corresponding knob on the top of the device, suitable for dual-channel dual-channel TENS units: TENS 7000 TENS units provide TENS treatment and are muscle stimulators, neurostimulators and electric massagers. It has independent dual channels that can control four (4) TENS cell pads (electrodes) for targeted pain relief Note: Refer to user manual and guide before use. The pulse amplitude or intensity level can be adjusted in 10mA increments from 0-100mA, controlled by the corresponding knob on the top of the device, for both channels. Use electrodes in pairs. When one electrode is used, the device will not work. Treatment and device timing, the device will automatically turn off after a set time