System Sensor MWBBW Wall Weatherproof Backbox

The System Sensor MWBBW weatherproof backbox is a metal wall-mount enclosure for SpectrAlert Advance outdoor speaker and speaker strobe devices, providing a durable, wet-location mounting option. It supports outdoor-ready conduit entry and helps protect field wiring in weather-exposed installations. Key Specifications: Type: Metal weatherproof backbox (wall-mount), white Core Function(s): Provides a sealed outdoor backbox for compatible wall devices with conduit entry and protected wiring space Loop/Protocol: N/A (mounting accessory) Power: N/A Indicators/UI: N/A Conduit/Entries: 3/4-inch top and bottom conduit entries; 3/4-inch rear knockouts Included Hardware: Screw-in NPT plug with O-ring gasket for watertight sealing Approx. Dimensions: 6.5 in L × 5.5 in H × 2.9 in D Compatible Devices: SPWK – Outdoor wall speaker (white) SPWK-R – Outdoor wall speaker, no plastic backbox (white) SPSWK – Outdoor wall speaker strobe, standard cd (white) SPSWK-P – Outdoor wall speaker strobe, plain, standard cd (white) SPSWK-R – Outdoor wall speaker strobe, no backbox, standard cd (white) SPSWK-CLR-ALERT – Outdoor wall speaker strobe, clear lens “ALERT” (white) System Compatibility: Compatible with System Sensor SpectrAlert Advance outdoor wall-mount speaker and speaker strobe models in white that use the MW-series weatherproof backbox.