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    $72.69
    NTI E-Dcsr-U Rugged Door Contact Sensor With Universal-Style Magnet
    Pro AV Warehouse
    $72.69
    NTI E-Dcsr-U Rugged Door Contact Sensor With Universal-Style Magnet
    Pro AV Warehouse
    $59.98
    Entry Sensor (2-Pack) White / 2 Pack
    Eufy
    $59.98
    Entry Sensor (2-Pack) White / 2 Pack
    Eufy
    $19.90
    $24.87
    Hafele 833.89.334, Loox Soft On/Off Door Sensor/Switch, Detection Range 0 To 4 Inch, Requires Modular Switch Lead And 6-Way Distributer With Switch, Silver
    CabinetParts.com
    19% off
    $19.90
    $24.87
    Hafele 833.89.334, Loox Soft On/Off Door Sensor/Switch, Detection Range 0 To 4 Inch, Requires Modular Switch Lead And 6-Way Distributer With Switch, Silver
    CabinetParts.com
    $23.99
    $29.99
    Chamberlain Myq Add On Door Sensor - MYQ-G0402
    Acme Tools
    20% off
    $23.99
    $29.99
    Chamberlain Myq Add On Door Sensor - MYQ-G0402
    Acme Tools
    $49.00
    Wireless Door/Window
    Backstreet Surveillance
    Free shipping
    $49.00
    Wireless Door/Window
    Backstreet Surveillance
    $7.32
    Uxcell 2Pcs RC-36 NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch Brown | Harfington
    harfington
    $7.32
    Uxcell 2Pcs RC-36 NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch Brown | Harfington
    harfington
    $244.99
    SECURITY DOOR CONTROLS Infrared Motion Sensor, MD-31DOW
    Zoro.com
    $244.99
    SECURITY DOOR CONTROLS Infrared Motion Sensor, MD-31DOW
    Zoro.com
    $31.99
    ID02 Door Operated Infrared Sensor Switch LED Automatic Controlling
    Kings Outdoor Lighting
    $31.99
    ID02 Door Operated Infrared Sensor Switch LED Automatic Controlling
    Kings Outdoor Lighting
    $69.99
    TP-Link - Tapo Smart Home Security Kit - Motion Detector, Contact Sensors X2, And Smart Hub W/ Adjustable Chime/Siren Included - White
    Best Buy
    Free shipping
    $69.99
    TP-Link - Tapo Smart Home Security Kit - Motion Detector, Contact Sensors X2, And Smart Hub W/ Adjustable Chime/Siren Included - White
    Best Buy
    $58.99
    $67.84
    Yolink Smart Home Starter Kit: Door Monitoring/Home Security Two Door/Window Sensor Hub Starter Kit, Alexa, IFTTT Compatible, Door "Still Open Reminder" Feature
    www.naturalkam.com C
    13% off
    $58.99
    $67.84
    Yolink Smart Home Starter Kit: Door Monitoring/Home Security Two Door/Window Sensor Hub Starter Kit, Alexa, IFTTT Compatible, Door "Still Open Reminder" Feature
    www.naturalkam.com C
    $24.99
    $42.66
    80Db Wireless Portable Door Bolt Alarm - Anti-Theft Security Device For Home Travel And Personal Protection. Portable And Easy To Use. Door Sensor Ala
    LightInTheBox
    41% off
    $24.99
    $42.66
    80Db Wireless Portable Door Bolt Alarm - Anti-Theft Security Device For Home Travel And Personal Protection. Portable And Easy To Use. Door Sensor Ala
    LightInTheBox
    $64.00
    Simplisafe Wireless Entry Sensor, 6Pk.
    Sam's Club
    $64.00
    Simplisafe Wireless Entry Sensor, 6Pk.
    Sam's Club
    $66.04
    Tresco WLDSREC Wireless Door Sensor Receiver
    Woodworker's Hardware
    $66.04
    Tresco WLDSREC Wireless Door Sensor Receiver
    Woodworker's Hardware
    $45.49
    $64.99
    Wifi Door Alarm System(2Nd Gen), Smart Home Alarm Security System DIY, Phone Alert, 8 Pieces-Kit (Alarm Siren, Door Window Sensors, Remotes), Work With Alexa, For House, Apartment, Alpha By Tolviviov
    Alternativasca Online One
    30% off
    $45.49
    $64.99
    Wifi Door Alarm System(2Nd Gen), Smart Home Alarm Security System DIY, Phone Alert, 8 Pieces-Kit (Alarm Siren, Door Window Sensors, Remotes), Work With Alexa, For House, Apartment, Alpha By Tolviviov
    Alternativasca Online One
    $89.97
    Entry Sensor (3-Pack) White / 3 Pack
    Eufy
    $89.97
    Entry Sensor (3-Pack) White / 3 Pack
    Eufy
    $33.16
    $36.48
    Skylink WD-434RTL Household Alert® Door/Window Wireless Sensor And Receiver Kit
    Action Direct
    $33.16
    $36.48
    Skylink WD-434RTL Household Alert® Door/Window Wireless Sensor And Receiver Kit
    Action Direct