Dual Channel TENS Machine for Pain Relief, TENS Unit Muscle Stimulator with 6 Modes & 8pcs TENS Pads Replacement, Digital Electronic Output Massager Pain Relief Massage Instrument, Joint Pain Relief Instructions for Use: Setup and Preparation: Before using the TENS unit, ensure the device is turned off. Attach the electrode patches to the desired areas of the body where pain relief or muscle stimulation is needed. Powering On and Connecting Patches: After attaching the patches, power on the TENS unit. Connect either 4, 8, or 2 patches simultaneously as per your therapy needs. Ensure that when connecting two stickers, select one wire from each pair separately to energize them. Avoid selecting both wires from the same pair to prevent lack of power. Precautions: Electrode Placement: Ensure the skin is clean and dry before applying electrode patches to promote good conductivity. Avoid placing electrodes over irritated or broken skin, wounds, or areas with sensory impairment. Power Management: Do not operate the TENS unit near water or in damp environments to prevent electrical hazards. Use the device strictly according to the specified voltage and power requirements to avoid damage.