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    System Sensor

    System Sensor's mission is to produce top-notch devices that save lives. Our versatile product offerings quickly detect the presence of dangers like smoke, fire, or carbon monoxide and then alert people to evacuate. We've been world leaders in the industry since 1984, and we're proud to serve our customers both offline and online.

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    Picture of BLUE LENS FOR L-SERIES WALL

    BLUE LENS FOR L-SERIES WALL

    SYSTEM SENSOR:LENS-B2
    SKU: SYSTEM SENSOR:LENS-B2
    $22.68
    Product Availability: Out of stock
    Picture of GREEN LENS FOR WALL MOUNT

    GREEN LENS FOR WALL MOUNT

    SYSTEM SENSOR:LENS-G
    SKU: SYSTEM SENSOR:LENS-G
    $13.58
    Product Availability: Out of stock
    Picture of GREEN LENS FOR L-SERIES WALL

    GREEN LENS FOR L-SERIES WALL

    SYSTEM SENSOR:LENS-G2
    SKU: SYSTEM SENSOR:LENS-G2
    $13.81
    Product Availability: Out of stock
    Picture of WALL MOUNT RED LENS FOR STROBE

    WALL MOUNT RED LENS FOR STROBE

    SYSTEM SENSOR:LENS-R
    SKU: SYSTEM SENSOR:LENS-R
    $22.68
    Product Availability: Out of stock
    Picture of RED LENS FOR L-SERIES INDOOR

    RED LENS FOR L-SERIES INDOOR

    SYSTEM SENSOR:LENS-R2
    SKU: SYSTEM SENSOR:LENS-R2
    $13.31
    Product Availability: Out of stock
    Picture of REPLACEMENT TEST MAGNET

    REPLACEMENT TEST MAGNET

    SYSTEM SENSOR:M02-04-00
    SKU: SYSTEM SENSOR:M02-04-00
    $10.60
    Product Availability: Out of stock
    Picture of TELESCOPING TEST MAGNET

    TELESCOPING TEST MAGNET

    SYSTEM SENSOR:M02-09-00
    SKU: SYSTEM SENSOR:M02-09-00
    $38.97
    Product Availability: Out of stock
    Picture of RED SYNCH CIRCUIT MODULE

    RED SYNCH CIRCUIT MODULE

    SYSTEM SENSOR:MDL3R
    SKU: SYSTEM SENSOR:MDL3R
    $105.51
    Product Availability: Out of stock
    Picture of WHITE SYNCH CIRCUIT MODULE

    WHITE SYNCH CIRCUIT MODULE

    SYSTEM SENSOR:MDL3W
    SKU: SYSTEM SENSOR:MDL3W
    $104.72
    Product Availability: Out of stock
    Picture of MINI-HORN RED, 12/24VDC

    MINI-HORN RED, 12/24VDC

    SYSTEM SENSOR:MHR
    SKU: SYSTEM SENSOR:MHR
    $22.59
    Product Availability: Out of stock
    Picture of MINI-HORN WHITE, 12/24VDC

    MINI-HORN WHITE, 12/24VDC

    SYSTEM SENSOR:MHW
    SKU: SYSTEM SENSOR:MHW
    $22.01
    Product Availability: Out of stock
    Picture of 120V ADAPTER MOUNTING PLATE

    120V ADAPTER MOUNTING PLATE

    SYSTEM SENSOR:MP120K
    SKU: SYSTEM SENSOR:MP120K
    $49.28
    Product Availability: Out of stock
    Picture of 120V L-SER ADAPTER MNTNG PLATE

    120V L-SER ADAPTER MNTNG PLATE

    SYSTEM SENSOR:MP120KL
    SKU: SYSTEM SENSOR:MP120KL
    $76.66
    Product Availability: Out of stock
    Picture of BEAM DETECTOR

    BEAM DETECTOR

    SYSTEM SENSOR:OSI-R-SS
    SKU: SYSTEM SENSOR:OSI-R-SS
    $1,266.12
    Product Availability: Out of stock
    Picture of X-PRFSCREW/YOKESUPERVISORYSW

    X-PRFSCREW/YOKESUPERVISORYSW

    SYSTEM SENSOR:OSYEXP
    SKU: SYSTEM SENSOR:OSYEXP
    $777.86
    Product Availability: Out of stock
    Picture of ACCESSORY KIT FOR OSY2

    ACCESSORY KIT FOR OSY2

    SYSTEM SENSOR:OSYRK
    SKU: SYSTEM SENSOR:OSYRK
    $20.02
    Product Availability: Out of stock
    Picture of 2WIREOUTDOORHORN/STROBEHIGH CD

    2WIREOUTDOORHORN/STROBEHIGH CD

    SYSTEM SENSOR:P2RHK
    SKU: SYSTEM SENSOR:P2RHK
    $123.99
    Product Availability: Out of stock
    Picture of 120V HORN/STROBE

    120V HORN/STROBE

    SYSTEM SENSOR:P2RHK-120
    SKU: SYSTEM SENSOR:P2RHK-120
    $116.08
    Product Availability: Out of stock
    Picture of INTERFACE MODULE I4

    INTERFACE MODULE I4

    SYSTEM SENSOR:COSMOD4W
    SKU: SYSTEM SENSOR:COSMOD4W
    $80.54
    Product Availability: Out of stock
    Picture of 2-WIREPHOTOELECTRICDUCTSMOKEDT

    2-WIREPHOTOELECTRICDUCTSMOKEDT

    SYSTEM SENSOR:D2
    SKU: SYSTEM SENSOR:D2
    $241.53
    Product Availability: Out of stock
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