Liftmaster 485LM Integrated BBU Replacement Battery

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Help, Troubleshooting, and Instructions

Liftmaster Help, Troubleshooting, and Instructions

MODEL 485LM integrated standby power system for use exclusively with the LiftMaster model 3850 garage door opener operates the garage door opener as if the power was still on (all safety and security features still operate) standby power system and opener are on one logic board, resulting in better performance in standby power mode improved battery recovery system