| Brand | System Sensor |
|---|---|
| Type | Duct Smoke Detector |
| MPN | 4-Wire Duct Smoke Detector |
Check the listing for details. System Sensor D4120A 4-Wire Duct Smoke Detector. Condition: New. Listed at 200.00 USD. The Innovair Flex D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. An improved cover design isolates the sensor head from the low-flow feature for simple maintenance.
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