Discover durable and reliable fire alarm bases for all major brands
Designed for seamless installation and optimal performance, our collection includes mounting bases, relay bases, sounder bases, and more.
Shop now for the best prices on high-quality fire alarm system accessories!

Kidde
Kidde KC2-RB4 Relay Base, 4 inch, for KC2 Conventional Detectors
Sale price$19.90
Regular price$23.88
In Stock
Siemens
Siemens DB-X3RS Series-3 Mounting Base with Relay
Sale price$118.45
Regular price$142.14
Contact Us for Alternatives
Simplex
Simplex 677-202 Detector Base with Relay, 4098 Series
Sale price$57.00
Regular price$68.40
In Stock
System Sensor
System Sensor B224RB-WH Plug-In Relay Detector Base, White, Form C Contact
Sale price$54.60
Regular price$65.52
In Stock
Mircom
Mircom MSB-65B-4R Series 65 Four-Wire Base
Sale price$21.20
Regular price$25.44
Only 3 units left
Siemens
Siemens DB-ADPT (500-094187) Detector Base Adapter
Sale price$25.75
Regular price$30.90
In Stock
Apollo
Apollo ORB-MB-50018-APO Orbis I.S. TimeSaver Base
Sale price$9.60
Regular price$11.52
Not in stock - available on backorder - lead time on request
Hochiki
Hochiki NS4-100 2-Wire, 4 Detector Base, 24 Vdc*
Sale price$6.95
Regular price$8.34
In Stock
FireClass
FireClass 517.050.041 4B Universal Detector Base
Sale price$4.45
Regular price$5.34
In Stock
Hochiki
Hochiki YBN-R/6M Conventional Marine Approved Detector Mounting Base
Sale price$13.35
Regular price$16.02
In Stock
System Sensor
System Sensor B401 Detector Base Standard Two Wire
Sale price$13.00
Regular price$15.60
Contact Us for Alternatives
System Sensor
System Sensor B224RB Intelligent Relay Base (Replaced by B224RB-IV)
Sale price$27.45
Regular price$32.94
In Stock
Simplex
Simplex 677-201 Sensor Base with Relay
Sale price$60.45
Regular price$72.54
Not in stock - available on backorder - lead time on request










