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 . Application: for Garage, electric door, rolling shutter door Pair code / reverse setting. 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. 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 will 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. Clearing code: Long press on the controller on the code key does not let go, the power indicator red light from on to off to flash three times, release the code button to clear the code successfully (all remote control paired with the controller has been cleared). Motor forward/reverse setting: When you need to change the direction of the motor in the reverse direction, press and hold the remote control lock button for a long time. About five seconds, the power indicator flashes red three times. Release the remote control lock button and the motor reverse direction changes successfully. Return to the setting operation. Be sure to stop the motor before changing the direction of the motor in the forward and reverse direction. Working voltage: AC220V Ambient temperature: -20 C -60 C Output current: 2A/220VAC Remote control distance: 50m Decoding method: single chip decoding (optional fixed code remote control and learning code remote control) Working frequency: 433MHZ Due to different product batches, the appearance , which does not affect the use Colour:As Shown Material:plastic Package Contents: 1 x controller 2 x remote control 1 x cable 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.