Fire & Life Safety
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System Sensor
SKU: 4WT-B
System Sensor 4WT-B 4-Wire Addressable Photoelectric Smoke Detector
4-wire addressable photoelectric smoke detector with NFC programming
$103.95 $69.99 Save $33.96 -
System Sensor
SKU: 4WTA-B
System Sensor 4WTA-B 4-Wire Photoelectric Smoke Detector
4-wire hardwired photoelectric smoke detector for 24 VDC fire systems
$122.85 $84.99 Save $37.86 -
System Sensor
SKU: 4WTAR-B
System Sensor 4WTAR-B i3 Series 4-Wire Photoelectric Smoke Detector...
4-wire addressable photoelectric smoke detector for monitored fire systems
$143.85 $91.99 Save $51.86 -
System Sensor
SKU: 4WTR-B
System Sensor 4WTR-B 4-Wire Addressable Photoelectric Smoke Detector
4-wire addressable photoelectric smoke detector for networked fire systems
$130.20 $88.99 Save $41.21 -
System Sensor
SKU: 5151
System Sensor 5151 Electronic Low-Profile Plug-In Heat Detector
Low-profile 35VDC heat detector for discrete ceiling/wall mounting
$70.88 $69.99 Save $0.89 -
System Sensor
SKU: 5601P
System Sensor 5601P 135F Fixed/Rate-of-Rise Mechanical Heat Detector
Dual-mode 135°F mechanical heat detector for two/four-wire fire loops
$30.45 $22.99 Save $7.46 -
System Sensor
SKU: 5602
System Sensor 5602 194F Fixed/Rate-of-Rise Mechanical Heat Detector
Two-wire mechanical heat detector for conventional fire alarm circuits
$30.98 $22.99 Save $7.99 -
System Sensor
SKU: 5603
System Sensor 5603 135F Fixed Temperature Mechanical Heat Detector
135°F fixed heat detector with TCP/IP for networked fire systems
$26.00 $18.99 Save $7.01 -
System Sensor
SKU: 5604
System Sensor 5604 194F Fixed Temperature Mechanical Heat Detector
Fixed temperature heat detector for conventional 2-wire fire alarm systems
$30.98 $22.99 Save $7.99 -
System Sensor
SKU: 5621
System Sensor 5621 135F Dual-Circuit Fixed/Rate-of-Rise Heat Detector
135°F dual-circuit heat detector for conventional and addressable systems
$56.70 $38.99 Save $17.71 -
System Sensor
SKU: 5622
System Sensor 5622 194F Dual-Circuit Fixed/Rate-of-Rise Heat Detector
Dual-circuit heat detector with fixed and rate-of-rise sensing for fire alarm systems
$57.23 $37.99 Save $19.24 -
System Sensor
SKU: 5623
System Sensor 5623 135F Dual-Circuit Fixed Temperature Heat Detector
135°F fixed-temperature heat detector with dual-circuit conventional and addressable wiring
$57.23 $38.99 Save $18.24 -
System Sensor
SKU: 5624
System Sensor 5624 194F Dual-Circuit Fixed Temperature Heat Detector
Dual-circuit fixed temperature heat detector with TCP/IP networking
$57.23 $37.99 Save $19.24 -
System Sensor
SKU: A77-AB2
System Sensor A77-AB2 Retrofit Adapter Bracket for i3 Series
TCP/IP retrofit adapter bracket for System Sensor i3 Series fire panels
$12.92 $11.99 Save $0.93 -
System Sensor
SKU: APA151
System Sensor APA151 Remote Annunciator with Piezo Alert
Remote annunciator with piezo sounder for 24 VDC fire alarm systems
$83.64 $55.99 Save $27.65 -
System Sensor
SKU: B114LP
System Sensor B114LP 120VAC Low-Profile Plug-In Detector Base
Low-profile 120VAC plug-in base with TCP/IP networking for confined spaces
$243.23 $162.99 Save $80.24
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.








