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    SYSTEM SENSOR D4S Photoelectric Sensor

    SYSTEM SENSOR D4S Photoelectric Sensor

    Photoelectric Sensor, Smoke Detector, Depth (In.) 2-1/2, Height (In.) 5, Length (In.) 7-3/4, Ambient Temp. Limits (F) -4 to 158, Air Velocity (FPM) 100 to 4000, Humidity Range ( Percent RH) 0 to 95, Standards UL, FM, Includes Duct Smoke Detector... more

    $66.79

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    SYSTEM SENSOR D4120 Photoelectric, Universal, Smoke Detector

    SYSTEM SENSOR D4120 Photoelectric, Universal, Smoke Detector

    Photoelectric, Duct Smoke Detector, Universal, Depth 2 1/2 In, Height 5 In, Length 14 3/8 In, Ambient Temp Limits -4 to 158 F, Air Velocity 100 - 4000 FPM, Alarm Aux Contact @ 250V 10A, Alarm Aux Contact @ 30VDC 10A, Alarm State Max 60mA @24VDC/ Max... more

    $165.60 $123.44

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    Best Seller
    SYSTEM SENSOR D4S Photoelectric Sensor

    SYSTEM SENSOR D4S Photoelectric Sensor

    Photoelectric Sensor, Smoke Detector, Depth (In.) 2-1/2, Height (In.) 5, Length (In.) 7-3/4, Ambient Temp. Limits (F) -4 to 158, Air Velocity (FPM) 100 to 4000, Humidity Range ( Percent RH) 0 to 95, Standards UL, FM, Includes Duct Smoke Detector... more

    $66.79

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    SYSTEM SENSOR DST1.5 Sampling Tube, Length 18 In

    SYSTEM SENSOR DST1.5 Sampling Tube, Length 18 In

    Sampling Tube, Smoke Detector, Finish Metal, Connects to Smoke Detector Mounting, Depth 1 In, Height 1 In, Length 18 In, Duct Width 1 to 2 Ft, For Use With G1106524,G2393456 more

    $5.80

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    SYSTEM SENSOR DST1 Sampling Tube,1 Ft.

    SYSTEM SENSOR DST1 Sampling Tube,1 Ft.

    Sampling Tube, Smoke Detector, Connects to Smoke Detector Mounting, Tube Length (Ft.) 1, Width (In.) 1/2, Duct Width (Ft.) Up to 1ft., Humidity Range ( Percent RH) 0 to 95, Number Required 1, For Use With Mfr. No. D4120, D4S more

    $3.99

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    Add-On Temperature and Humidity Sensor with Water Leak Detector for Wireless Monitor Alerts System

    Add-On Temperature and Humidity Sensor with Water Leak Detector for Wireless Monitor Alerts System

    Free Shipping on Over 500K Items!

    Monitor an additional area with this add-on TX70U-IT remote water detector with early warning alerts that monitors for water leaks and measures ambient temperature and humidity. Prevent property damage to your home, business or vacation rentals caused... more

    $36.67

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    System Sensor 5603 135°F Fixed Temp, Single-Circuit Mechanical Heat Detector

    System Sensor 5603 135°F Fixed Temp, Single-Circuit Mechanical Heat Detector

    135 degreesF Fixed Temperature Single-Circuit Mechanical Heat Detector more

    $22.23

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    System Sensor COPLATE CO Detector Replacement Plate (Pack of 5)

    System Sensor COPLATE CO Detector Replacement Plate (Pack of 5)

    CO Detector Replacement Plate (Pack of 5) more

    $33.48

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    Protech D4120 4-Wire Photoelectric Duct Smoke Detector

    Protech D4120 4-Wire Photoelectric Duct Smoke Detector

    The innovair flex D4120 duct smoke detectors provide superb immunity to false alarms and easy, labor saving installation options. Its flexible configurations allow an easy Replacement to any model, and its 2 to 1 sensor to power board offers cost... more

    $119.00

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    Esky Car Rear Reverse Parking Sensor System with LED Display Car Reverse View Backup Detector Radar with 4 Parking Sensors

    Esky Car Rear Reverse Parking Sensor System with LED Display Car Reverse View Backup Detector Radar with 4 Parking Sensors

    The Most Sizzling Savings Are Here! Check more promotion!Esky Parking Sensor LED Display Car Reverse Backup Radar with 4 Parking Sensors This Esky Car Reverse Backup Radar System consists of 4 Ultrasonic sensors, digital control box, and LED display,... more

    $26.88

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    First Alert Battery-Powered Photoelectric Combination Smoke And Carbon

    First Alert Battery-Powered Photoelectric Combination Smoke And Carbon

    Battery-powered smoke and carbon monoxide detector protects your family against smoke fire and toxic gas. Photoelectric sensor with a patented smoke entry system detects slow smoky and smoldering fires and reduces false alarms. Testsilence button... more

    $38.97

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    Lowe's

    (25,000+)
    System Sensor - Photoelectric, Duct Smoke (Grey) Detector,14-3/8,

    System Sensor - Photoelectric, Duct Smoke (Grey) Detector,14-3/8,

    Photoelectric, Duct Smoke Detector, Universal, Depth 2 1/2 In, Height 5 In, Length 14 3/8 In, Ambient Temp Limits -4 to 158 F, Air Velocity 100 - 4000 FPM, Alarm Aux Contact @ 250V 10A, Alarm Aux Contact @ 30VDC 10A, Alarm State Max 60mA @24VDC/ Max... more

    $136.08

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    System Sensor White Duct Smoke Detector,14-3/8,

    System Sensor White Duct Smoke Detector,14-3/8,

    Duct Smoke Detector, Watertight, Photoelectric, Finish White, Duct Mounting, Alarm Current 100mA, Depth 2 1/2 In., Length 14 3/8 In., Width 5 1/2 In., Ambient Temp. Limits -4 to 158 F, Air Velocity 100 - 4000 FPM, Alarm Aux. Contact @ 30VDC 10A,... more

    $141.99

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    System Sensor White Carbon (Black) Monoxide Detector,6,

    System Sensor White Carbon (Black) Monoxide Detector,6,

    Carbon Monoxide Detector, Signaling Device, Finish White, Single Gang Box Mounting, Alarm Current 40mA, Peak Output 85 dBA, Height 6 In., Length 6 In., Width 6 In., Ambient Temp. Limits 32 to 104 F, Alarm Aux. Contact @ 30VDC 0.5 A, Humidity Range 22... more

    $57.00

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    First Alert Atom Micro Photoelectric Smoke Alarm

    First Alert Atom Micro Photoelectric Smoke Alarm

    Advanced Micro Design 62% Smaller Than Typical Smoke Detector Photoelectric Smoke Sensor Is Resistant To Nuisance Alarms Includes Long-life 3v Cr2 Lithium Battery Features Loud 85db Siren & Test and silence Button Smartclip Safe Mounting System... more

    $29.99

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    BOSCH DETECTION D300A-HV DUCT DETECTOR W/HEAD 220V

    BOSCH DETECTION D300A-HV DUCT DETECTOR W/HEAD 220V

    Bosch Security Systems, Inc D300a-Hv Duct Detector W/Head 220V more

    $149.90

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    SYSTEM SENSOR B401 SYS SENSOR B401 2-WIRE BASE

    SYSTEM SENSOR B401 SYS SENSOR B401 2-WIRE BASE

    2-wire base for use with 400 Series smoke detectors more

    $19.27

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    Edwards Systems 5251FB Intelligent Heat Detector

    Edwards Systems 5251FB Intelligent Heat Detector

    FIRE ALARM SENSOR more

    $38.99

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    System Sensor 6500-SMK, Surface Mount Kit for use with 6500-MMK

    System Sensor 6500-SMK, Surface Mount Kit for use with 6500-MMK

    Surface Mount Kit For Beam Detectors more

    $39.60

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    System Sensor By Honeywell-Us 2WR LOW PROFILE BASE 24VDC C - BK-B116LP

    System Sensor By Honeywell-Us 2WR LOW PROFILE BASE 24VDC C - BK-B116LP

    The model B116LP plug-in detector base is used with System Sensor model 1151, 1151A, and 1151E ionization detector heads and model 2151, 2151A, and 2151E photoelectronic detector heads. The capability of plugging these detectors into a variety of... more

    $50.22

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    SimpliSafe SSES1 Smoke Detector

    SimpliSafe SSES1 Smoke Detector

    Compatible only with a SimpliSafe Home Security System. Does not work as a standalone sensor or with any other manufacturer's alarm system. Entry Sensor contains two pieces. more

    $29.99

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    Base B112Lp

    Base B112Lp

    4 wire base with Form A&C relay contacts, for use with 100 Series smoke detectors more

    $38.35

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    SYSTEM SENSOR CO1224T Carbon Monoxide Detector,Signal Device

    SYSTEM SENSOR CO1224T Carbon Monoxide Detector,Signal Device

    Carbon Monoxide Detector, Signaling Device, Finish White, Single Gang Box Mounting, Alarm Current 40mA, Peak Output 85 dBA, Height 6 In., Length 6 In., Width 6 In., Ambient Temp. Limits 32 to 104 F, Alarm Aux. Contact @ 30VDC 0.5 A, Humidity Range 22... more

    $57.00

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    Carbon Monoxide Detector + Smoke Fire Alarm - Combo CO Detector & Smoke Sensor Alarm Sound Photoelectric Tester, Battery Operated with Digital Display for CO Level (White)

    Carbon Monoxide Detector + Smoke Fire Alarm - Combo CO Detector & Smoke Sensor Alarm Sound Photoelectric Tester, Battery Operated with Digital Display for CO Level (White)

    A smoke detector is a device that senses smoke, typically as an indicator of fire. Commercial security devices issue a signal to a fire alarm control panel as part of a fire alarm system, while household smoke detectors, also known as smoke alarms,... more

    $19.99

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    Carbon Monoxide Detector + Smoke Fire Alarm - Combo CO Detector & Smoke Sensor Alarm Sound Photoelectric Tester, Battery Operated with Digital Display for CO Level (White)

    Carbon Monoxide Detector + Smoke Fire Alarm - Combo CO Detector & Smoke Sensor Alarm Sound Photoelectric Tester, Battery Operated with Digital Display for CO Level (White)

    A smoke detector is a device that senses smoke, typically as an indicator of fire. Commercial security devices issue a signal to a fire alarm control panel as part of a fire alarm system, while household smoke detectors, also known as smoke alarms,... more

    $16.71

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    System Sensor Honeywell APA151 Annunciator For Duct Piezo Alarm

    System Sensor Honeywell APA151 Annunciator For Duct Piezo Alarm

    System Sensor Honeywell APA151 more

    $48.87 $20.88

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    System Sensor Honeywell 2151T Photo Electric Smoke Detector With Thermal

    System Sensor Honeywell 2151T Photo Electric Smoke Detector With Thermal

    System Sensor Honeywell 2151T more

    $50.63

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    System Sensor Honeywell 5151 Heat Detector,Plug-In Combo Rate-Of Rise And Fixed

    System Sensor Honeywell 5151 Heat Detector,Plug-In Combo Rate-Of Rise And Fixed

    System Sensor Honeywell 5151 more

    $28.74

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    SILENT KNIGHT B501 4in base

    SILENT KNIGHT B501 4in base

    A 4" plug in detector base for System Sensor style detectors intended for use with IntelliKnight series fire alarm control panels more

    $27.37

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    MACURCO TX-6-ND Gas Detector, NO2, 5000 sq. ft.

    MACURCO TX-6-ND Gas Detector, NO2, 5000 sq. ft.

    Gas Detector, Controller, Transducer, Gas Type NO2, Number of Channels 2, Sensor Range 5000 sq. ft., Alarm Type Internal Buzzer, Display LED, Status Indicator Yes, Features Supervised System Design, Detector Problem Will Cause The Fan and Alarm Relay... more

    $543.67

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    Security Smoke Alarm Detector Ionization Sensor Fire Alert With 9V Battery

    Security Smoke Alarm Detector Ionization Sensor Fire Alert With 9V Battery

    Home Security System Smoke Alarm Detector Ionization Sensor Heat Fire Alert Hardwired With 9V Backup Battery US PlugFeatures:Help to alert you to potential fire dangers by detecting the presence of smoke and heat in the atmosphere. It built in 9v... more

    $11.54

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    MACURCO GD-6 Gas Detector, C3H8, CH4, H2, 900 sq. ft.

    MACURCO GD-6 Gas Detector, C3H8, CH4, H2, 900 sq. ft.

    Gas Detector, Controller, Transducer, Gas Type C3H8, CH4, H2, Number of Channels 2, Sensor Range 900 sq. ft., Alarm Type Internal Buzzer, Display LED, Status Indicator Yes, Features Supervised System Design, Detector Problem Will Cause The Fan and... more

    $354.58

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    MACURCO CM-12 Fixed Gas Detector,CO,4-1/2in.Hx4in.W G0461609

    MACURCO CM-12 Fixed Gas Detector,CO,4-1/2in.Hx4in.W G0461609

    Gas Detector, Controller, Transducer, Gas Type CO, Number of Channels 2, Sensor Range 0 to 200 ppm, Resolution 1 ppm, Alarm Type Audible and Visual, Display LED, Status Indicator Yes, Features Powered by Line Voltage, ETL Listed, Supervised System... more

    $372.31

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    MACURCO CM-6 Gas Detector, CO, LED

    MACURCO CM-6 Gas Detector, CO, LED

    Gas Detector, Controller, Transducer, Gas Type CO, Number of Channels 2, Sensor Range 5000 sq. ft., Alarm Type Internal Buzzer, Display LED, Status Indicator Yes, Features Supervised System Design, Detector Problem Will Cause The Fan and Alarm Relay to... more

    $354.57

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    Home Security Phone Telespy Telephone Motion Sensor Spy Auto Dialer Alarm System

    Home Security Phone Telespy Telephone Motion Sensor Spy Auto Dialer Alarm System

    "TeleSpy The Worlds Most Practical Intrusion Detector!This top of the line phone catches burglars.Then within seconds, notifies you directly.With the flick of a switch this phones becomes the worlds most practical intrusion detector.24/7 FREE,... more

    $73.99 $29.98

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    PRC710 10-Year Combination Carbon Monoxide and Photoelectric Smoke Detector 1 Pack, USA, Brand First Alert

    PRC710 10-Year Combination Carbon Monoxide and Photoelectric Smoke Detector 1 Pack, USA, Brand First Alert

    N/AImportedCombination Photoelectric Smoke & Electrochemical Carbon Monoxide Sensors Detect Deadly Smoke, Fire & Co HazardsPatented Smoke Entry System Allows For A Direct Path To The Photoelectric Smoke SensorNuisance-free Photoelectric Technology... more

    $53.29

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    First Alert Atom Micro Photoelectric Smoke Alarm with Sealed Battery

    First Alert Atom Micro Photoelectric Smoke Alarm with Sealed Battery

    "Features: -Photoelectric sensor. -Advanced micro-technology in a smoke and fire alarm. -Easy wall or ceiling installation with smart chip system. -Loud 85DB siren. Product Type: -Smoke Detector. Orientation: -Wall/Ceiling Mounted. Mounting: -Universal... more

    $77.99

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    First Alert Atom Micro Photoelectric Smoke Alarm

    First Alert Atom Micro Photoelectric Smoke Alarm

    "Features: -Advanced micro design. -62% Smaller than typical smoke detector. -Photoelectric smoke sensor is resistant to nuisance alarms. -Features loud 85DB siren & test/silence button. -Smartclip(TM) safe mounting system prevents alarm installation... more

    $43.99

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    System Sensor B524BI Automatic Detector Base for S911 UL Listed Heads, White

    System Sensor B524BI Automatic Detector Base for S911 UL Listed Heads, White

    System Sensor B524BI Automatic Fire Detector Base for S911 UL Listed Heads Color: White. more

    $18.50

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    System Sensor Photoelectric Sensor,7-3/4,, Grey

    System Sensor Photoelectric Sensor,7-3/4,, Grey

    Photoelectric Sensor, Smoke Detector, Depth (In.) 2-1/2, Height (In.) 5, Length (In.) 7-3/4, Ambient Temp. Limits (F) -4 to 158, Air Velocity (FPM) 100 to 4000, Humidity Range ( Percent RH) 0 to 95, Standards UL, FM, Includes Duct Smoke Detector... more

    $66.79

    FREE shipping

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