Garage door opener 1. for automatic door/garage door 2. open, close by pressing button 3 ... the motor)No. of relay:two channelsCode:Learning code 3. Procedure to LearnPress the learn button ... learn led is on, press any button of the remote, there is two “Bi, Bi”, led flash ... , that mean the code has been learnt successfully.4. Wiring diagram: Positive and negative rotate control of Garage door opener