Siemens DI-B3 Ionization Smoke Detector
The Siemens DI-B3 is an ionization-type smoke detector designed for use with legacy Siemens fire alarm systems. The “B” designation in the DI-B3 model number indicates a B-series base configuration, providing a distinct mounting and wiring interface compared to the standard DI-3 detector head.
Ionization smoke detectors like the DI-B3 are highly effective at detecting fast-flaming fires by sensing combustion particles in the air. The detector head interfaces with its compatible base to complete the detection circuit, providing zone supervision and reliable alarm signaling back to the fire alarm control panel.
The DI-B3 is part of the Siemens DI-series detector family — a legacy product line that was widely installed in commercial, institutional, and industrial facilities. Replacement detectors and heads for this series are increasingly difficult to source, making reconditioned and new-old-stock units an essential resource for facilities maintaining existing Siemens fire alarm infrastructure.
Life Safety Consultants specializes in legacy Siemens fire alarm components. For questions about the DI-B3, base compatibility, or your specific panel, contact our team at sales@lifesafetycom.com or call (888) 557-0558.
Additional information
| Weight | .5 lbs |
|---|---|
| Dimensions | 6.5 × 6.5 × 2.5 in |
| Part Type | Duct Detector / Housing, Smoke Detector |
| Manufacturers | Siemens |
| Compatible Panels | Siemens legacy conventional fire alarm panels, Siemens DI-series compatible panels |
| Compatible Bases | B-series Siemens detector base (verify specific base part number) |
| Cross Reference | DI-B3, DIB3 |
| Specification | Ionization detection technology, B-series base configuration, legacy Siemens DI-series product family, for use with compatible Siemens fire alarm control panels |
