20pcs 433MHz RF Remote Control 4CH Button Car Key Garage Door Opener Remote Control Auot Copy Electronic Gate control Duplicator

Steps
1. Clear code and restore
Press and hold the two buttons above at the same time, make sure that the LED flashes for a while and then goes out and does not let go. After 2 seconds, the LED light starts flashing, which indicates that the code has been cleared. Press and hold the two buttons below at the same time, the LED light starts to flash after 3 seconds, which indicates that the code has been restored to the code that was cleared last time.
2. Copy
Take the original remote control in the left hand, and our self-test remote control in the right hand. The two remote controls are as close as possible. Press the corresponding button keys of the two remote controls at the same time, and the LED lights will keep flashing, which indicates that the code of the button keys of the original remote control has been learned by our self-test remote control.
The other 3 button keys also operate in the same way.
3. Recovery
When you accidentally clear the code of the self-copying remote control, you can press the following two buttons at the same time, the LED light will light up after 3 seconds, and then flash quickly, which indicates that the code of the self-copying remote control has been restored.
Note: Before using our self-copying remote control to copy, please be sure to clear the existing code of the self-copying remote control. The following is the method to test whether the existing code of the self-copying remote control has been successfully cleared:
Note: The flashing speed of the LED is that when you finish the clearing action, you can press any key of the sub-copy, if the LED flashes once immediately and then goes out, it means that the sub-copy code has been cleared. It is determined by the launch oscillation resistance of the remote control!

Package includes:
20 * 433MHz remote control