System Sensor 3G-OTH-546837 — Technical Specifications
The SYSTEM SENSOR D4120W is a UL-listed duct smoke detector with a photoelectric sensor, hardwired for 20V AC/24V AC/24V DC power and rated at 100 mA current. Designed for duct mounting in fire alarm systems, it features a white body and is part of our broad industrial safety portfolio across 14 departments, with specialist depth in combustion, pumps, and controls.
Technical Specifications
| Parameter | Value |
|---|---|
| Type | 100 mA Current, Duct Mount, White |
| Brand | SYSTEM SENSOR |
| Detects | Smoke |
| Standards | UL |
| Body Color | White |
| Sensor Type | Photoelectric |
| Power Source | Hardwired |
| Current Rating | 100 mA |
| Voltage Rating | 24V DC |
| Mounting Location | Duct |
| Manufacturer Part Number | D4120W |