433mhz Universal Cloning Duplicator Key Fob Distance Copy Duplicator Remote Control Duplicator 9v 4 Channe Clone Fixed 1pc Description: 100% Brand New and High Quality Please confirm before buying, this remote control is 433mhz (note: rolling code remotes will not work). 1.Code cleaning method: Press the unlock button and lock button at the same time(some shells are the up button and down button), after the LED indicator light flashes three times, loosen any one of the buttons while the other is kept pressing, then push the released button three times, the LED indicator will enter into the fast flashing status. At this time all the memory data is cleared, the cleaned remote control will not have lighting LED indicator no matter which button you press. 2. Copy method One hand keeps the remote controller, while another keeps the copy remote control, the two remote controls should be placed as closely as possible (the ideal situation is to put the two remote controls on the desktop side by side with zero distance), respectively press down the copy button, when the LED indicator light flashes quickly after three flashes, this copy is successful, other key operating methods are the same. Some remote control has a smaller transmitting power, so the remote control should be placed back to the copy remote control to be operated. For the presence of noise, should avoid interference to operate, If the copy is not successful, it should recopy after clearing code. Pls clear the testing code before copy. Press the upper 2 buttons at the same time until the LED light flashes 3 times quickly, then release any one of the buttons (the other one keep pressing), and press this button 3 times, then release both buttons after the LED light fiashes quickly. The LED light doesn't turn on when you press any button, that means you' ve removed the code. Studying Code. Press and hold one button on this remote, and also the same on your remote controller, make them close to receive the signal 3 seconds, LED light will quickly flash and then always on, then release the button . Try to press this button, LED light will be on, that means you have copied successfully. the same steps to other buttons. Recovery function. If you delete the useful codes accidently, you can press the 3& 4th buttons at the same time until the LED light flashes quickly 3 times then recover successfully.