Pair code / reverse setting. Application: for Garage, electric door, rolling shutter door This product has learned the code between the remote controller and the controller before leaving the factory. It is not necessary to pair again before use. If you need to increase or decrease the remote control, you can follow the following steps. The controller and the paired remote control adopt a million sets of learning code encoding chips, and the re-bit rate is extremely low, and the use is . Pair code:1. Stop the motor by first pressing the stop motor on the remote control.2. Press the code button on the controller to release the hand, power indicator turn off the red light, and then press any button on the remote control. The power indicator flashes red three times, indicating that the code is successful., Weight: 1.79235819006 pounds, Manufacturer: Hfgdnchva