4W-B 4-wire Photoelectric smoke detectors. All models incorporate a state-of-the-art optical sensing chamber.
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Plug-in detector line – mounting base included
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Large wire entry port
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In-line terminals with SEMS screws
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Mounts to octagonal and single-gang backboxes, 4-square backboxes, or direct to ceiling
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Stop-Drop ’N Lock™ attachment to base
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Removable detector cover and chamber for easy cleaning
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Built-in remote maintenance signaling
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Drift compensation and smoothing algorithms
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Simplified sensitivity measurement
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Wide angle, dual colour LED indication
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Loop testing via EZ Walk feature
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Built-in test switch