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Liftmaster 412HM Gate and Garage Door Opener Universal Coaxial Receiver incorporates the Security+® rolling code technology. The code between the remote and receiver changes with each use for added security. This receiver will work on either 12 volt DC or 18 - 35 volts AC/DC, jumper selectable. It 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. Includes Receiver, antenna, Wire, and Instructions. Two piece aluminum case with detachable cover.
Manual: A2143MQB ID: 412HM