Copy method:Hold the original remote control in one hand and the duplicate remote control in the other the signals from both remote controls must be kept at zero distance.Separately press the desired button, the LED indicator flashes three times, then quickly.If the copy is successful, the other buttons work the same way.If the copy fails, the above operation must be repeated several times.If you have a rolling code remote, we don't recommend you buy it, but as the video shows, it is possible to copy CAME brands, code range: 2260, 2262, 1527, etc.More information on the product details pageA strong signal can pass through walls, floors, doors, panels, etc.It can be controlled within 50 meters in open space.Wide range of applications, e.g. anti-theft alarm panel, elevators, boats, motorized curtains, roller shutters, garage doors, door bars, remote controlled electric telescopic doors, remote controlled LED lights, etc.Flexibility: The 4 in 1 remote control allows you to clone up to 4 buttons.Each button works independently Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.