REMOTE CONTROL FUNCTION: This is a universal garage door remote control. Fixed frequency (433.92MHz) to copy fixed code remote controls and common learning functions. (Not compatible with some rolling code remote controls) SMALL AND PORTABLE: The small keychain can be easily attached to the car key, convenient to carry. It can directly replace the old or damaged original parts. The button has a sliding cover that prevents you from accidentally pressing the button to open and close the car door by accident. FOLLOW TO CLEAR THE CODE: Press the left button and the right button of the remote control at the same time, the LED indicator flashes three times, release the left button, the right button is not released, click the left button three times, the LED indicator flashes quickly, all data in the memory is cleared. that moment. Once cleared, you can copy the code. HOW TO COPY THE CODE: Hold the original remote control in one hand and the copy in the other; the two remote controls must be