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The GENIE 39279R is a door sensor designed for residential garage door systems. It monitors the open and closed state of the garage door and communicates that status to the compatible opener or control system. Installers rely on this sensor to maintain safe door operation and to enable auto-close and alert features where supported. The sensor is black in finish and ships as a single unit. Licensed garage door technicians and general contractors performing door system work are the typical installers for this component.
The 39279R is intended for use with residential garage doors. It is suited for standard single-car and two-car garage door opener installations where door-state monitoring is required. The sensor integrates into the door system wiring to provide position feedback to the opener control board. It is a direct replacement or add-on sensor component for compatible GENIE residential systems.
Designed as an OEM-style replacement or add-on door sensor for compatible GENIE residential garage door opener systems. Consult the opener documentation to confirm fitment before installation.
Installation should be performed by a qualified garage door technician or licensed contractor familiar with low-voltage wiring and door system components. Disconnect power to the garage door opener at the outlet or breaker before handling sensor wiring. Mount the sensor per the opener manufacturer guidelines, ensuring the magnet and sensor body align correctly for reliable door-state detection. Follow all applicable local codes governing low-voltage wiring and residential door safety devices.
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