Smoke detector shall be a System Sensor i3 Series model number 2WTR-B, listed to Underwriters Laboratories UL 268 for Fire Protection Signaling Systems.
The detector shall be a combination photoelectric/thermal equipped with a Form C relay. The detector shall include a mounting base for mounting to the 3½-inch and 4-inch octagonal, single gang, and 4-inch square back boxes with a plaster ring, 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 the base and the head shall be a plug-in type.The detector shall have a nominal sensitivity of 2.5% per foot nominal as measured in the UL smoke box. The detector shall be capable of automatically adjusting its sensitivity by means of drift compensation and smoothing algorithms. The detector shall provide dual color LED indication which blinks to indicate power-up, normal standby, out of sensitivity, alarm, and freeze trouble conditions.
When used in conjunction with the 2W-MOD2 module, the 2WTR-B shall include a maintenance signal to indicate the need for maintenance at the alarm control panel, and shall provide a loop testing capability to verify the circuit without testing each detector individually. When used in conjunction with the RRS-MOD module, all i3 sounder models on a loop shall sound when one alarms, all shall be synchronized, and all sounders may be silenced from the panel.
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