Duplicate Your Existing Remote Controllers so you always have a backup: 1.Vehicle central locking systems 2. Garage doors 3. Electronic gates 4. Electrical appliances/Home automation i.e. lights 5. Car sunroofs 6. Car/Motorbike alarms Easy to use, the 4 channel remote control system lets you take control of your gadgets, car, home and garageParameter:Operating Current: ≤12mAOperating frequency: 433.92MhzTransmitting power: ≥10mWTransmission Distance: 50 meters (open)Frequency deviation: ± 0.2MHzTransfer rate: 50--60KHZWorking temperature: -20~70℃Storage temperature: -10~ 50℃Humidity: 85% or less How to Program:Step-1 Clear the history code from duplicator:Hold down the A and B buttons, LED lights flash slowly three times then off, then press and hold the A button to remain intact, release the B button, immediately press the B button three times in a row (this action must be completed within 3 seconds) and then LED flashes quickly, which indicates that the code has been cleared.Step-2 Copy code from original transmitter:Place the cloner remote and the original remote close together side by side. Make sure they are touching.1. 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. The Blue LED will first flash 3 times quick, then stops for a second, then flashes steadily.2. Release both buttons. Programming is successful. Copy other buttons in same way.Recovery: If you accidentally remove a copy from the remote control code, you can simultaneously press the A and D, 3S later, LED flashes 3 times, then began to flash rapidly, indicating the copy from the remote control code is restored.