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D273 Series: Photoelectric Smoke and Heat Detectors

These detector models use an infrared (IR) LED light source and a silicon photodiode to measure light in a chamber. A fine screen covers the chamber to deter insects and reduce dust accumulation and nuisance alarms.
During a fire, smoke particles reflect light onto the photodiode. When the photodiode measurements exceed the alarm threshold, the detector signals an alarm condition. After the alarm condition clears, interrupt power at the control panel to reset the detector.

Mfr. Part #: D273THE
SKU: 50233
Availability: Please Call for Availability

$112.18

Four-Wire Smoke Detector Four-wire smoke detector.
Mfr. Part #: D273
SKU: 50220
Availability: Please Call for Availability

$79.18