20pcs 433MHz RF Remote Control 4CH Button Car Key Garage Door Opener Remote Control Auot Copy Electronic Gate control Duplicator
20pcs 433MHz RF Remote Control 4CH Button Car Key Garage Door Opener Remote Control Auot Copy Electronic Gate control Duplicator Specifications: Transmission frequency: 433 MHzTransmission distance: 50-100m (open area) 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 t