DASHUHUWAI 1pcs 433mhz 4 Channel Rf Wireless Remote Control Garage Door Cloning Portable 4-channel cloning garage door remote control transmitter duplicator (face to face copy) 433.92MHz Simultaneously press the two top buttons on the clone remote until the blue LED flashes. This clears the clone remotes memory ready for programming (this procedure takes approximately 10 seconds). Hold the original and the clone remote close to each other. Simultaneously press a button on your original remote and one of the buttons on the clone remote and hold until the LED on the clone remote flashes steadily. Programming is now complete. Repeat steps 2 &gt; 4 to program more buttons.