Also known as: 012381993123, 312HMC
- 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
- 3-year warranty
