1. Learning methods: the learning key on the receiving control board, and immediately the specified key on the remote control to learn after the buzzer sounds. After the receiving control board receives the signal, the buzzer sounds, indicating that the learning has been successful. 2. Clear the remote control information: and hold the learning button of the receiving module for about 10 seconds until the buzzer sounds Bi, indicating that the stored information has been successfully cleared. About remote control distance:The remote distance we are talking about is that the transmitting/receiving module works separately, and is equipped with a metal antenna of a quarter wavelength, and is in a vertical state The maximum decodable distance measured in a straight line open ground under rated conditions. Because it works in the UHF band, electromagnetic waves propagate in a straight line. Encounter obstacles be dramatic attenuation, the remote control distance is significantly shortened, so the use should try to avoid obstacles, or as high as possible antenna. Color: As Shown Material: ABS Package Contents: 1 x Motor Controller Board 1 x Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.