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System Sensor 4WT-B Photoelectric i3 Smoke Detector, 4-Wire, 135F fixed thermal sensor
4WT-B System Sensor | JMAC Supply
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System Sensor 4WT-B Photoelectric i3 Smoke Detector, 4-Wire, 135F fixed thermal sensor

  • Also known as: 4WTB, BK-4WTB

  • The System Sensor 4WT-B is a 4-wire, photoelectric i3 smoke detector with a 135 degreesF 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.

    The i3 series provides wide-angle red and green LED indicators for instant inspection of the detector's condition: normal standby, out-of-sensitivity, alarm, or freeze trouble. When connected to the 2W-MOD2 loop test/maintenance module or a panel with the i3 protocol, the EZ Walk loop test feature is available on 2-wire i3 detectors. This feature verifies the initiating loop wiring by providing LED status indication at each detector.
    • Plug-in detector line, mounting base included
    • Large wire entry port
    • In-line terminals with SEMS screws
    • Mounts to octagonal and single-gang back boxes, 4-square back boxes, or direct to ceiling
    • Stop-Drop N Lock attachment to base
    • Removable detector cover and chamber
    • Built-in remote maintenance signaling
    • Drift compensation and smoothing algorithms
    • Simplified sensitivity measurement
    • Wide-angle, dual-color LED indication
    • Loop testing via EZ Walk feature
    • Built-in test switch

    Technical Specifications:

    • Detection: Photoelectric
    • Wiring: 4-wire
    • Heat Sensor:135F (57.2C) fixed
    • Operating Voltage:12/24 V non-polarized nominal, 8.5 min. to 35 max.
    • Maximum Ripple Voltage:30% of nominal (peak to peak)
    • Alarm Current: 20mA max. @ 12V, 23mA @ 24V
    • Standby Current: 50 A max. avg.
    • Alarm Contact Ratings: 0.5 A @ 30V AC/DC
    • Operating Temperature Range: 32 to 100F (0 to 37.8C)
    • Operating Humidity Range: 0% to 95% RH, noncondensing
    • Freeze Trouble: 41F (5C)
    • Sensitivity:2.5%/ft. nominal
    • Wiring Gauge: 14-22 AWG
    • Dimensions:2.0" (51mm) H x 5.3" (127mm) Dia.
    • Weight: 6.3 oz. (178 g)

    UPC: 783863017629

    Average rating: 4.0, based on 1 review

    For more information about the System Sensor 4WT-B, please contact us.

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