System Sensor D4240 is a 4-wire photoelectric low-flow duct smoke detector. It features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. A plug-in sensor head offers improved false alarm immunity and simple installation, testing, and maintenance. An improved cover design isolates the sensor head from the low-flow feature for simple maintenance.
| Make | System Sensor |
|---|---|
| Manufacturer | System Sensor |
| Model code | D4240 |
| Type | Smoke |
| Additional info |
System Sensor D4240 is a 4-wire photoelectric low-flow duct smoke detector. It features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. A plug-in sensor head offers improved false alarm immunity and simple installation, testing, and maintenance. An improved cover design isolates the sensor head from the low-flow feature for simple maintenance. |