Function description: 1. Pairing : Press the learning button on the module , the indicator light flashes on, press any button on the remote control , and the module flashes after receiving the signal, indicating that the pairing is successful. (Only support the specific remote control shipped by company, other of remote control need to parameters to the customer service to check whether it is compatible.)2. Press the learning button 8 to set the incoming call to open, and press it again to turn off the incoming call open function. The factory default is to turn off the incoming call open.3. Press the learning button 9 to clear all the learned remote controls.Working voltage: DC 3.7V~24VWorking current: maximum 5A, continuous work for a long time 3AWiring : two in and two outsize: 26 x 13 x 3.5mmMaterial: ABScolour: blackPackage Contents:1 x moduleOnly the above package content, other products are not included.Note: Light 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.