Siemens fire alarm equipment is installed throughout large commercial, healthcare, industrial and campus buildings, and those systems are typically serviced over long lifecycles rather than replaced. That is where sourcing parts gets difficult, and it is what this collection is built around.
The Siemens devices we keep in stock:
- Siemens smoke detectors - photoelectric, optical, multi-criteria, and combination optical, heat and carbon monoxide sensors
- Thermal and heat detectors
- Duct smoke detectors and duct housings
- Detector bases, including standard, low profile surface mount and sounder bases
- Addressable monitor, interface and dual input modules
- Manual pull stations, horns, strobes, horn strobes and speaker strobes
- Power supplies, NAC expander boards and device programmers
Siemens supersedes part numbers regularly, and detectors and interface modules go out of production while the systems using them stay in service. We stock current and discontinued Siemens parts, including the successor devices for models that have been replaced. If you cannot find what you need, submit the part number on our quote page.

Siemens
Siemens HZM (500-034850) Conventional Zone Module
Sale price$139.45
Regular price$167.34
In Stock
Siemens
Siemens SLSWW-ALA Strobe Wall White
Sale price$93.55
Regular price$112.26
Contact Us for Alternatives
Siemens
Siemens FJ-303SS (500-698309) Phone Jack
Sale price$100.10
Regular price$120.12
Not in stock - available on backorder - lead time on request
Siemens
Siemens PAD-4-ENCL (500-050081) NAC Expander Enclosure
Sale price$139.50
Regular price$167.40
In Stock
Siemens
Siemens ST-CMC-CW-MNS-ALERT (S54301-Z94-A1)
Sale price$140.00
Regular price$168.00
Only 6 units left
Siemens
Siemens SET-185-R-WP Speaker Hi Candela Wall Red
Sale price$187.15
Regular price$224.58
Contact Us for Alternatives
Siemens
Siemens MH-501 Dual Action Manual Pull Station
Sale price$192.20
Regular price$230.64
In Stock
Siemens
Siemens RLW-11 (500-694626) Remote Lamp Module
Sale price$23.35
Regular price$28.02
Not in stock - available on backorder - lead time on request
Siemens
Siemens ID-SP Inner Door Single Blank Plate
Sale price$68.55
Regular price$82.26
Not in stock - available on backorder - lead time on request
Siemens
Siemens SE-HMC-CR (500-636033) Speaker Hi Multi-Candela
Sale price$110.80
Regular price$132.96
Only 3 units left
Siemens
Siemens SLSCW-F (S54329-F15-A1)
Sale price$59.40
Regular price$71.28
Contact Us for Alternatives
Siemens
Siemens SET-S17-W-WP ET Speaker 1575 Strobe White Weatherproof
Sale price$173.70
Regular price$208.44
Contact Us for Alternatives
Siemens
Siemens ZH-MC-W (Replaced by SLHSWW-F)
Sale price$101.40
Regular price$121.68
Contact Us for Alternatives
Siemens
Siemens FT-GLS Replacement Glass for FC-300S Field Mounted
Sale price$57.50
Regular price$69.00
Not in stock - available on backorder - lead time on request
Siemens
Siemens ST-HMC-R-WP Strobe Hi Multi Candela Wall Red Weatherproof
Sale price$102.20
Regular price$122.64
In Stock
Siemens
Siemens SE-MC-W (500-636026) (Replaced by SLSPSWW-F)
Sale price$119.40
Regular price$143.28
Contact Us for Alternatives
Siemens
Siemens ZH-R (500-636159) Notification Appliances
Sale price$51.30
Regular price$61.56
Contact Us for Alternatives
Siemens
Siemens TRI-S (500-896225) Interface Single Input Module
Sale price$947.20
Regular price$1,136.64
In Stock
Siemens
Siemens DB-3S Series-3 Base
Sale price$15.85
Regular price$19.02
Not in stock - available on backorder - lead time on request
Siemens
Siemens CRC-6 (500-033250) Control Relay Card
Sale price$221.20
Regular price$265.44
In Stock



