Since 1984, System Sensor has manufactured premium fire detection and life safety devices that deliver outstanding results
We specialize in a number of fire alarm products for a wide variety of needs, like smoke and fire detectors, aspirating smoke detectors, carbon monoxide detectors, audible visible notification devices, and HVAC smoke detection equipment.
Our focus on research, development, and industry knowledge is second to none, and our products are used in commercial, industrial, residential, and mission-critical markets across the world.

System Sensor
System Sensor SSM24-10 10 Inch Alarm Bell, 24 VDC Polarized
Sale price$72.35
Regular price$86.82
Not in stock - available on backorder - lead time on request
System Sensor
System Sensor SPSWL-CLR-ALERT Speaker Strobe
Sale price$98.45
Regular price$118.14
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System Sensor
System Sensor SCWK Strobe Ceiling White Outdoor
Sale price$65.45
Regular price$78.54
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System Sensor
System Sensor R-10T Relay, SPDT, Multivolt, Track Mount
Sale price$24.30
Regular price$29.16
In Stock
System Sensor
System Sensor LENS-B2 Lens for Indoor Wall Mount Strobes Blue
Sale price$17.90
Regular price$21.48
In Stock
System Sensor
System Sensor DCOIL Remote Test Coil for D2 and Older DNR/DNRW Duct Smoke Detectors
Sale price$30.15
Regular price$36.18
In Stock
System Sensor
System Sensor HRL-LF L-Series 520 Hz Low Frequency Sounder, Wall Mount, Red
Sale price$68.65
Regular price$82.38
In Stock
System Sensor
System Sensor EPS40-2 High/Low Pressure Supervisory Switch, Two SPDT, 10 to 100 PSI
Sale price$160.65
Regular price$192.78
In Stock
System Sensor
System Sensor 5151 Conventional Heat Detector
Sale price$41.20
Regular price$49.44
In Stock
System Sensor
System Sensor B501BP Detector Base - Bulk Pack with 10 Units
Sale price$25.25
Regular price$30.30
Only 60 units left
System Sensor
System Sensor R-20E Multi Voltage Single 2 Form C
Sale price$50.45
Regular price$60.54
In Stock
System Sensor
System Sensor 5251H Heat Detector (Replaced by 5351H)
Sale price$96.15
Regular price$115.38
Not in stock - available on backorder - lead time on request
System Sensor
System Sensor SPSWKLED-P Outdoor LED Speaker Strobe Wall, Plain
Sale price$135.75
Regular price$162.90
In Stock
System Sensor
System Sensor SWLED-P 2-Wire Wall-Mount Strobe with LED, White
Sale price$49.20
Regular price$59.04
In Stock
System Sensor
System Sensor SGWLED Series Compact Wall Strobe
Sale price$46.75
Regular price$56.10
In Stock
System Sensor
System Sensor SGRKLED-P L-Series LED Strobe Outdoor Wall Compact Red Plain
Sale price$75.05
Regular price$90.06
In Stock
System Sensor
System Sensor SCRLED-P Series Ceiling Mount Strobe with LED
Sale price$50.25
Regular price$60.30
Not in stock - available on backorder - lead time on request
System Sensor
System Sensor R-10E Multi-Voltage Conventional Relay
Sale price$44.45
Regular price$53.34
In Stock
System Sensor
System Sensor MOD2W i3 Series Loop Test/Maintenance Module, 2-Wire
Sale price$85.75
Regular price$102.90
In Stock
System Sensor
System Sensor P2WK-P Horn Strobe 2-Wire
Sale price$97.80
Regular price$117.36
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System Sensor
System Sensor SCWL-BP10 Strobe - Bulk Pack with 10 Units
Sale price$427.80
Regular price$513.36
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System Sensor
System Sensor PC2RL-BP10 Horn Strobe Red - Bulk Pack with 10 Units
Sale price$586.60
Regular price$703.92
Only 12 units left
System Sensor
System Sensor PDRP-2001E Fire Alarm Control Panel 220/240 VAC
Sale price$1,910.15
Regular price$2,292.18
In Stock
