The 4WT-B is a 4-wire, photoelectric i3 smoke detector with a 135°F fixed thermal sensor.
System Sensor i3 ™ series smoke detectors represent significant advancement in conventional detection. The i3 family is founded on three principles: installation ease, intelligence, and instant inspection.
The i3 line redefines installation ease with its plug-in design. This allows an installer to pre-wire bases (included with heads). The large wire entry port and in-line terminals provide ample room for neatly routing the wiring inside the base. The base accommodates a variety of back box mounting methods as well as direct mounting with drywall anchors. To complete the installation, i3 heads plug into the base with a simple Stop-Drop ’N Lock™ action.
i3 detectors offer a number of intelligent features to simplify testing and maintenance. Drift compensation and smoothing algorithms are standard with the i3 line to minimize nuisance alarms. 2-wire i3 detectors can generate a remote LED indicated maintenance signal when connected to the 2W-MOD2 loop test/maintenance module or a panel equipped with the i3 protocol. The SENS-RDR, a wireless device, displays the sensitivity of i3 detectors in terms of percent-per-foot obscuration.
Main Features
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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 back boxes, 4-square back boxes, or direct to ceiling
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Stop-Drop ’N Lock attachment to base
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Removable detector cover and chamber
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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-color LED indication
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Loop testing via EZ Walk feature
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Built-in test switch
