Fire & Life Safety
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System Sensor
SKU: B114LPBT
System Sensor B114LPBT 24VAC/DC Low-Profile Plug-In Detector Base
Low-profile 24VAC/DC plug-in base with TCP/IP networking
$176.51 $115.99 Save $60.52 -
System Sensor
SKU: B116LP
System Sensor B116LP 2-Wire Low-Profile Plug-In Detector Base with ...
2-wire low-profile detector base, 24VDC, plug-in System Sensor modules
$115.00 $114.99 Save $0.01 -
System Sensor
SKU: BEAMLRK
System Sensor BEAMLRK Active Infrared Beam Detector Long-Range
Long-range active IR beam detector with relay output for perimeter protection
$235.78 $156.99 Save $78.79 -
System Sensor
SKU: BEAMMMK
System Sensor BEAMMMK Beam Detector Multi-Mount Kit
Multi-position mounting kit for System Sensor TCP/IP beam detectors
$152.45 $99.99 Save $52.46 -
System Sensor
SKU: BEAMSMK
System Sensor BEAMSMK Beam Detector Surface-Mount Kit
Surface-mount kit for System Sensor beam detectors on 32VDC networks
$84.21 $83.99 Save $0.22 -
System Sensor
SKU: CO-PLATE
System Sensor CO-PLATE CO Detector Replacement Plate
TCP/IP CO detector replacement plate for networked fire safety systems
$48.97 $47.99 Save $0.98 -
System Sensor
SKU: CO1224TR
System Sensor CO1224TR 4-Wire CO Detector with Form C Relay
4-wire CO detector with Form C relay for fire alarm integration
$151.20 $97.99 Save $53.21 -
System Sensor
SKU: COSMO-2W
System Sensor COSMO-2W i4 Series 2-Wire CO/Smoke Detector with Sounder
Dual smoke/CO detector on single 2-wire loop with integrated sounder
$220.64 $147.99 Save $72.65 -
System Sensor
SKU: COSMO-4W
System Sensor COSMO-4W 4-Wire Combination CO/Smoke Detector with Sounder
4-wire combo CO/smoke detector with built-in sounder for conventional panels
$223.86 $151.99 Save $71.87 -
System Sensor
SKU: COSMOD2W
System Sensor COSMOD2W i4 Series 2-Wire Interface Module
2-wire interface module for fire alarm system integration at 35VDC
$112.47 $78.99 Save $33.48 -
System Sensor
SKU: COSMOD4W
System Sensor COSMOD4W i4 Series 4-Wire Interface Module
i4 Series 4-wire interface module for addressable fire detection networks
$109.78 $75.99 Save $33.79 -
System Sensor
SKU: D2
System Sensor D2 2-Wire Photoelectric Duct Smoke Detector
Photoelectric duct detector, 2-wire conventional, 29VDC for HVAC systems
$303.00 $164.99 Save $138.01 -
System Sensor
SKU: D4120
System Sensor D4120 4-Wire Photoelectric Duct Smoke Detector
4-wire photoelectric duct detector, 24 VDC, direct mount to HVAC
$375.14 $248.99 Save $126.15 -
System Sensor
SKU: D4120W
System Sensor D4120W 4-Wire Watertight Duct Smoke Detector
4-wire duct detector with NEMA 4 watertight housing for humid HVAC environments
$505.70 $332.99 Save $172.71 -
System Sensor
SKU: D4240
System Sensor D4240 4-Wire Duct Smoke Detector 120VAC
4-wire duct smoke detector for supply/return air HVAC monitoring
$327.19 $216.99 Save $110.20 -
System Sensor
SKU: D4P120
System Sensor D4P120 Duct Detector Power Board Component
TCP/IP duct detector power board, 29VDC output for System Sensor assemblies
$251.77 $164.99 Save $86.78
Commercial fire alarm and life-safety equipment for office, retail, multifamily, education, healthcare, and industrial deployments. Code-compliant initiating devices, notification appliances, and control panels — sourced direct from the manufacturer or a US channel distributor with full UL listings and AHJ documentation.
Specify a Code-Compliant System
- Control panels — conventional zone panels for small buildings; addressable systems for multi-loop deployments, healthcare, education, and multi-tenant retrofits.
- Initiating devices — photoelectric, ionization, dual-sensor smoke; fixed and rate-of-rise heat; CO; manual pull stations; duct detectors.
- Notification appliances — horn-strobes, speaker-strobes, mini-horns, chimes with synchronized signaling and ADA candela ratings.
- Monitor and control modules — for waterflow, tamper, door-hold, elevator recall, and integration with access-control egress.
- Sprinkler monitoring — waterflow and tamper switches connecting wet/dry/pre-action systems to the FACP per NFPA 72.
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Specifier FAQ
Working on a fire-system project?
Our Senior Specialist team has working integrators who specify and commission commercial fire-alarm systems daily. Send your project documents — panel selection, device count, code authority — and we'll route the bill of materials and lead times back to you.








