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Photoelectric Smoke Detectors

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Product Description



 • 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 backboxes, 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









Installation ease.

The i3 line redefines installation ease with itsplug-in design.

This allows an installer to pre-wire bases (includedwith heads).

The large wire entry port and in-line terminals provideample room for neatly routing the wiring inside the base.

The baseaccommodates a variety of back box mounting methods as well asdirect mounting with drywall anchors.

To complete the installation, i3heads plug into the base with a simple Stop-Drop ’N Lock™ action.


i3 detectors offer a number of intelligent featuresto simplify testing and maintenance.

Drift compensation andsmoothing algorithms are standard with the i3 line to minimizenuisance alarms.

2-wire i3 detectors can generate a remote LED

indicatedmaintenance signal when connected to the 2W-MOD2loop test/maintenance module or a panel equipped with the i3protocol.

The SENS-RDR, a wireless device, displays the sensitivityof i3detectors in terms of percent-per-foot obscuration.

Instant inspection.

The i3 series provides wide-angle red andgreen LED indicators for instant inspection of the detector’scondition:

normal standby, out-of-sensitivity, alarm, or freeze trouble.

When connected to the 2W-MOD2 loop test/maintenance moduleor a panel with the i3 protocol,

the EZ Walk loop test feature isavailable on 2-wire i3 detectors. T

his feature verifies the initiating loopwiring by providing LED status indication at each detector.



Smoke Detector Specifications

Architectural/Engineering Specifications
Smoke detector shall be a System Sensor i3 Series model number_______, listed to Underwriters Laboratories UL 268 for Fire Protection Signaling Systems. Thedetector shall be a photoelectric type (Model 2W-B, 4W-B) or a combination photoelectric/thermal (Model 2WT-B, 4WT-B) with thermal sensor rated at 135°F(57.2°C). The detector shall include a mounting base for mounting to 3½-inch and 4-inch octagonal, single-gang, and 4-inch square back boxes with a plasterring, or direct mount to the ceiling using drywall anchors. Wiring connections shall be made by means of SEMS screws. The detector shall allow pre-wiring of thebase and the head shall be a plug-in type. The detector shall have a nominal sensitivity of 2.5 percent-per-foot nominal as measured in the UL smoke box. Thedetector shall be capable of automatically adjusting its sensitivity by means of drift compensation and smoothing algorithms. The detector shall provide dualcolorLED indication that blinks to indicate power up, normal standby, out of sensitivity, alarm, and freeze trouble (Model 2WT-B, 4WT-B) conditions. When usedin conjunction with the 2W-MOD2 module, 2-wire models shall include a maintenance signal to indicate the need for maintenance at the alarm control paneland shall provide a loop testing capability to verify the circuit without testing each detector individually.

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