LiftMaster 312HM High Memory Universal Gate Receiver - Works with Remote Controls: 371LM, 373LM, 890MAX, 893MAX, 892LT, 894LT, 361LM. External 8' whip antenna included. Enhanced Radio TechnologyTM rolling code and/or DIP switch compatibility. 12 volt DC or 18 - 35 volts AC/DC jumper selectable Momentary or constant contact, jumper selection. Two-piece aluminum case with detachable cover High security memory stores up to 18 Enhanced Radio Technology remote controls or keyless entry codes. Normal security memory stores up to 31 LiftMaster remote control codes of any type 315MHz.
