Siemens fire alarm systems are widely deployed in large commercial, industrial, and institutional facilities around the world. From the advanced Desigo Fire Safety platform and the MXL / MXLV intelligent panels to the legacy Pyrotronics systems (now branded under Siemens), these systems require specialized replacement parts that maintain protocol compatibility. Finding the right Siemens fire alarm replacement parts can be challenging due to the brand’s transition from Cerberus Pyrotronics, but Fire Alarm Spare Parts has you covered.
We stock nearly 1,000 Siemens and Pyrotronics parts, including detectors, modules, strobes, pull stations, and panel-level boards.
Siemens Fire Alarm Systems We Support
| Panel / System | Protocol | Common Replacement Parts |
|---|---|---|
| Desigo Fire Safety (FC2060/FC2020) | Cerberus PRO | FDO/FDT detectors, FDCIO modules, bases |
| MXL / MXLV | MXL Protocol | Line cards, power supplies, MXL detectors |
| FireFinder XLS | P2 Protocol | TRI/HFP detectors, modules, annunciators |
| Pyrotronics System 3 | Legacy | DLC detectors, relay modules, pull stations |
| XLS / PXL | P2 | HFP sensors, PZC modules, power supplies |
Common Siemens Replacement Parts
Intelligent Detectors
Siemens offers several detector families depending on the panel generation. The FDO421 (optical smoke) and FDT421 (heat) serve Cerberus PRO systems. For MXL panels, the HFP-11 and HTRI-R intelligent detectors are standard. Legacy Pyrotronics systems use the DLC series.
Notification Appliances (Z-Series Strobes)
Siemens Z-series strobes — including the ZR-MC-CW (ceiling white), ZR-MC-R (wall red), and ZH-MC-R (horn/strobe) — are designed for Siemens systems but are also used as general-purpose appliances. We carry multi-candela models in various configurations.
Shop Siemens Strobes → | Shop Siemens Horns →
Modules & Interface Devices
The HTRI-R single interface module, POX-1 relay module, and ACM-1 audio control module are commonly replaced components. For Cerberus PRO systems, the FDCIO series provides input/output functionality.
Pull Stations & Manual Devices
The MSM-K manual pull station with key and the HMS-D dual-action pull station are standard across Siemens installations.
Siemens vs. Pyrotronics: Understanding the Naming
Siemens acquired Cerberus Pyrotronics in 1998, and many legacy parts are still labeled “Pyrotronics” or “Cerberus.” These parts are fully compatible with Siemens-branded systems of the same generation. When searching our inventory, try both “Siemens” and “Pyrotronics” to find the widest selection.
Shop All Siemens Fire Alarm Parts →
Need assistance? Call 1-844-839-6844.