Chamberlain TX2REV 868 MHz Garage Door Remote Control Chamberlain Gate OpenerSpecifications:dwt: Scimagic-RCProduct Model: SMG-008V15.0Product material: ABSSize: 60*30*12mmProduct weight: 40 gColor: Black + silverBattery: 3V (CR2032 Include)Installation: wirelessCorresponding frequency: 433MHz, 433.92MHz, 868MHz, 868.3MHz, 868.35MHz.Radio transmission distance: 50-100m (Open area)Easy to useThis is a clone remote control, it needs to clone your original remote control face to face.If your remote control is a fixed code, after cloning, the new remote control will work.If your remote control is rolling code, after cloning, the new remote control needs to be programmed / activated on the receiver, the new remote control works.I will provide you with detailed instructions in the package, it is a card.Include:Remote ControlBatteryKeychainEnglish Manual