Four-Wire Smoke Detector
Four-wire smoke detector.
Four-Wire Smoke Detector
Four-wire smoke detector.
| Model | Description |
| D273 | Four-wire |
| D273IS¹ | Four-wire with an isolated 135°F (57°C) heat sensor and sounder |
| D273TH | Four-wire with 135°F (57°C) heat sensor |
| D273THC | Four-wire with 135°F (57°C) heat sensor and auxiliary relay |
| D273THCS¹ | Four-wire with 135°F (57°C) heat sensor, auxiliary relay, and sounder |
| D273THE | Four-wire with 135°F (57°C) heat sensor and EOL relay |
| D273THR² | Four-wire with 135°F (57°C) heat sensor and trouble relay |
| D273THS¹ | Four-wire with 135°F (57°C) heat sensor and sounder |
| D273THES¹ | Four-wire with 135°F (57°C) heat sensor, sounder, and EOL relay |
The D273 Family includes the following detector models:
| Model | Description |
| D273 | Four-wire |
| D273IS¹ | Four-wire with an isolated 135°F (57°C) heat sensor and sounder |
| D273TH | Four-wire with 135°F (57°C) heat sensor |
| D273THC | Four-wire with 135°F (57°C) heat sensor and auxiliary relay |
| D273THCS¹ | Four-wire with 135°F (57°C) heat sensor, auxiliary relay, and sounder |
| D273THE | Four-wire with 135°F (57°C) heat sensor and EOL relay |
| D273THR² | Four-wire with 135°F (57°C) heat sensor and trouble relay |
| D273THS¹ | Four-wire with 135°F (57°C) heat sensor and sounder |
| D273THES¹ | Four-wire with 135°F (57°C) heat sensor, sounder, and EOL relay |
¹ Sounders produce 85 dB at 10 ft (3 m)
² The trouble relay indicates both Dirty Smoke Chamber and/or Power Loss conditions
Each of the detector models is UL Listed and works with commercial fire protective signaling and household fire warning systems. Each model detects smoke particles produced during wood, paper, and fabric combustion.
| Weight | 0.2 lbs |
|---|---|
| Construction | ABS |
| Material Qualities | Fire Retardant, High Impact Resistance |
| Series | |
| Brand | |
| Production Status | Discontinued |
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| Weight | 0.2 lbs |
|---|---|
| Construction | ABS |
| Material Qualities | Fire Retardant, High Impact Resistance |
| Series | |
| Brand | |
| Production Status | Discontinued |
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Power Supervision Module
Line supervision device for four-wire fire detection circuits
Trim Plate
For retrofit and remodeling purposes; 16.2 cm (6 in.) diameter. Not available.
Detector Removal Tool
Use the DT-2 to remove, replace, or test the detector head
Test cable 3ft
Connects a digital voltmeter to the detector's calibration pin for verifying that the detector is within its calibration range
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