LiftMaster 412HM High Memory Universal Gate Receiver

LiftMaster 412HM High Memory Universal Gate Receiver ,Security+ (Amber learn button) code rotating technology. The code ,between the remote and receiver changes with each use for added security ,The receiver and antenna use a TV Type F coaxial connectors. The ,antenna can plugged directly onto the receiver or mounted to a bracket ,and connected to the receiver with Model 86LM Coaxial Cable Kit ,Includes Receiver,Antenna,Wire and Instructions ,Over 100 billion possible codes in High Security mode,this receiver ,will work on 12 volt DC or 18 - 35 volts AC/DC,jumper selectable. ,Can be used with up to 18 Security+ (code rotating) transmitters or ,31 of ANY type transmitter including billion code,code rotating or code ,switch remote ,Security+ (Amber learn button) rolling ,code technology and/or billion code/DIP switch compatibility ,For gates,also compatible with Liftmaster Commercial Gate Wireless Digital Keypad model 466LM. ,Momentary or constant contact,jumper selectable. ,FCC certified 390MHZ