System Sensor 2WTR-B
System Sensor 2WTR-B
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The System Sensor 2WTR-B is a two-wire i3 Series smoke detector that combines a photoelectric smoke sensor with a 135°F fixed-temperature thermal element and a Form C relay output, letting one plug-in head cover both smoke and heat detection on the same conventional two-wire circuit. Its plug-in base pre-wires independently of the head, so the base can be installed and the circuit tested before the sensing head is snapped in, and an 85dB onboard sounder can provide local notification directly at the detector.
Key Features
- Combination photoelectric smoke and 135°F fixed-temperature thermal detection in one head
- Form C relay output for auxiliary control functions
- Plug-in head/base design for pre-wiring and easy replacement
- Integral 85dB sounder for local notification
Technical Specifications
- Operating Voltage: Nominal 12/24V (non-polarized), 8.5V min. to 35V max.
- Standby Current: 50µA max. average, 100µA peak
- Alarm Current: 130mA max. (panel-limited)
- Sensitivity: 2.5%/ft nominal (photoelectric)
- Form C Contact Rating: 2A @ 30VAC/DC
- Dimensions: 5.3" diameter x 2.0" height; Weight: 7.1 oz
Certifications
- UL 268 Listed
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