Chamberlain T2REV 868 MHz Garage Door Remote Control Chamberlain Gate OpenerSpecificationsdwt ScimagicRCProduct model SMG008V15.0Product material ABSSize 603012mmProduct weight 40 gColor BlacksilverBattery 3V CR2032 IncludedWireless installationCorresponding frequency 433MHz, 433.92MHz, 868MHz, 868.3MHz, 868.35MHz.Radio transmission distance 50100m Open areaEasy to useThis is a clone remote control, it needs to be cloned from your original remote control face to face.If your remote is a fixed code, after cloning, the new remote will work.If your remote is rolling code, after cloning, the new remote needs to be programmedis activated on the receiver, the new remote control works.will give you detailed instructions in the package, it is a card.IncludesRemote controlBatteryKeychainEnglish Manual