System Sensor 4wtar-b
ChatMRO

The System Sensor 4WTAR-B is in our catalogue: Wiring 4-wire, Thermal Yes, Mounting 3½-inch octagonal back box, 4-inch octagonal back box, single-gang back box, 4-inch square back box with a plaster ring, direct mount to ceiling.

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In stock4-Wire Photoelectric Smoke Detector with Thermal and Relay
System Sensor · 4WTAR-B

4-Wire Photoelectric Smoke Detector with Thermal and Relay

$ 121.80per unit · ex. VAT
The 4WTAR-B is a 4-wire photoelectric smoke detector featuring a built-in fixed temperature thermal sensor (135°F), Form C relay, and piezoelectric alarm. It operates on 12/24 V nominal voltage and includes freeze trouble detection. Designed for conventional fire alarm systems, it supports multiple mounting options and offers reliable performance in environments up to 95% RH non-condensing.
Wiring
4-wire
Thermal
Yes
Mounting
3½-inch octagonal back box, 4-inch octagonal back box, single-gang back box, 4-inch square back box with a plaster ring, direct mount to ceiling
Sensitivity
2.5 percent/ft. nominal
Alarm Current
50 mA
Wiring4-wire
ThermalYes
Mounting3½-inch octagonal back box, 4-inch octagonal back box, single-gang back box, 4-inch square back box with a plaster ring, direct mount to ceiling
Sensitivity2.5 percent/ft. nominal
Alarm Current50 mA
Freeze Trouble41 degree Fahrenheit (5 degree Celsius)
Thermal Sensor135 degree Fahrenheit (57.2 degree Celsius) fixed
Input Terminals14–22 AWG
Standby Current50 microampere maximum average
Operating VoltageNominal: 12/24 V non-polarized, 10 V to 35 V
Sound Pressure Output85 dBA
Form C Contact Ratings2 A @ 30 V AC/DC