This Liftmaster 355LM is the perfect unit to upgrade your old Liftmaster receiver to the new rolling code technology for an enhanced level of security.
•Features Security+® rolling code technology
•Compatible with LiftMaster® Security+® remote controls
•Jumper option for momentary or constant relay contact
•Specifically for use with most 3-wire systems without a transformer
•Optional plug-in AC transformer requires no hard wiring
•Accepts up to 8 Security+® remote control codes and 1 Keyless Entry code
Please note this product requires the use of the Liftmaster 371LM, 372LM, 373LM, 374LM visor remote control, 890MAX key chain remote, and or the 877MAX wireless keypad.