The LiftMaster 50510 Alarm Bell (Wall Mount) is an audible signaling accessory designed to integrate with LiftMaster gate operators, commercial door openers, and access control systems. It provides a clear, attention-getting alert to warn pedestrians and vehicles during gate or door movement, annunciates access events, or supports site safety policies. Commonly used in parking facilities, warehouses, loading docks, and other high-traffic areas, this replacement/upgrade component helps increase awareness around automated entrances in both residential and commercial applications.
This bell is intended for hardwired use with compatible LiftMaster controllers that support an external audible device output. Installation typically involves mounting the unit on a wall near the controlled opening and wiring it to the operator’s designated terminals following the specific LiftMaster operator manual and local electrical codes. Placement should ensure the signal can be heard where needed. For safety and reliability, professional installation is recommended, routine testing should be performed, and the bell should be used in conjunction with other safety devices such as photo-eyes, monitored edges, and visual beacons. Always consult the documentation for your exact LiftMaster model to verify compatibility and wiring requirements.


