Output: 1. Select an appropriate heat level and timer duration using the LED controller. 2. Position the heating pad on the desired area of the body, ensuring it is flat and not folded or bunched. 3. Avoid using the heating pad for more than 4 hours at a time. 4. Do not use the heating pad while sleeping or taking a nap. 5. Store the heating pad in a cool, dry place when not in use.