Easy to use, the 4 channel remote your garage door It is wireless and portable The product includes battery and key ring Specifications: Working voltage: DC12V (27A battery a including) Operating Current: ≤ 8mA Working frequency: 433.92MHz(Optional 315MHz) Modulation Mode: ASK (AM) The transmission power: ≤ 100mW Emission Distance: 50 to 100 m (proof) The encoding type: self Copy Uses: garage doors, motorcycles, car alarm products, home security products, short-range wireless remote control products, industrial control products How to Program: Press the One and Three buttons until the LED flashes - it takes around 3 seconds. Place the cloner remote and the original remote close together or side by side so that they are touching. Press a button on your original remote in the same time 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 for successful cloning). Now programming is successful! If you want to program more buttons just repeat steps 2 > 4. It's that easy! To reset the remote simply start again with step Notice: The essential condition for the selection of the remote control the copyed remote control operates normal,chip is compatible and frequency is correct. Before buying,please make sure the copyed remote control operating frequency or choose and buy the frequency adjustable type remote control. Before buying,please confirm whether your remote control can be copyed or not. Our remote control can copy the fixed codes and learning codes rather than stealth codes. It can't copy original car remote control, two-way remote control and rolling code remote control (Rolling code chips start with HCS commonly,such as HCS200,HCS201,HCS300,HCS301,etc