The Siemens FDBZ492-PR is a self-contained air-duct smoke detection housing. It includes an onboard power supply and relay. The housing mounts directly to HVAC ductwork. As a result, it monitors supply and return air for smoke.
A sampling tube draws air from the duct across a compatible smoke detector. Then the sampled air returns to the duct through an outlet tube. Therefore, the housing detects products of combustion moving through the air stream.
Siemens FDBZ492-PR Power and Relay
The FDBZ492-PR accepts several input sources. Specifically, it operates from 24 VAC, 24 VDC, 115 VAC, or 230 VAC. In addition, it provides a Form C dry-contact relay. This relay is rated 2.5 A at 125 VAC / 24 VDC. As a result, it can trigger HVAC shutdown or other control functions.
Specifications
- Self-contained duct housing with integrated power supply and relay
- Houses a compatible Siemens smoke detector (detector ordered separately)
- Input power: 24 VAC, 24 VDC, 115 VAC, or 230 VAC
- Form C dry-contact relay rated 2.5 A at 125 VAC / 24 VDC
- Air velocity range: 100-4000 ft/min
- Complies with NFPA 72 and NFPA 90A; UL Listed
Because the housing requires a compatible detector, confirm the detector model before ordering. Life Safety Consultants stocks Siemens duct housings and detectors.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 1.6 lbs |
|---|---|
| Condition | New |
| Manufacturers | Siemens |
| Part Type | Duct Detector / Housing |







