SALE Home Security Sensor Alarm Detector Door Window
$21.08$36.98
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Sensors & Motion Detectors deals
Discounted security listings from eBay sellers, biggest markdowns first. Prices and availability change fast — confirm on eBay before buying.
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SALE 
SALE Home Security Sensor Alarm Detector Door Window
$21.08$36.98
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SALE SimpliSafe Entry Sensor Window and Door Protection Security System
$14.99$26.24
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SALE Ring Alarm Motion Detector White 1st Gen 4SP1S70EN0
$8.00$14.14
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SALE Anti Spy Detector Hidden Camera RF Bug Finder GPS Tracker Portable Counter Surve
$16.81$28.99
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SALE Anti Spy Detector Hidden Camera RF Bug Finder GPS Tracker Portable Counter Surve
$16.81$28.99
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SALE Anti Spy Detector Hidden Camera RF Bug Finder GPS Tracker Portable Counter Surve
$16.81$28.99
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SALE Home Security Sensor Alarm Detector Door Window
$21.45$36.98
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SALE Home Security Sensor Alarm Detector Door Window
$21.45$36.98
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Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE Home Security Sensor Alarm Detector Door Window
$21.45$36.98
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SALE Govee H5103 Wi-Fi Indoor Thermo-Hygrometer Temp Humidity Sensor White
$23.00$39.31
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SALE Anti Spy Detector Hidden Camera RF Bug Finder GPS Tracker Portable Counter Surve
$17.10$28.99
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SALE Anti Spy Detector Hidden Camera RF Bug Finder GPS Tracker Portable Counter Surve
$17.10$28.99
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SALE Defiant Wireless Home Security Door Window Alarm Kit THD-WK
$23.70$39.97
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SALE Home Security Sensor Alarm Detector Door Window
$21.82$36.98
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SALE Home Security Sensor Alarm Detector Door Window
$21.82$36.98
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SALE Wireless RF Door Entry with Receiver Lighting Control By Defiant with Batteries
$7.77$12.95
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SALE Hive Window or Door Sensor Smart Home Indoor - Factory Sealed
$5.39$8.99
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SALE 1/2 Mile Wireless Driveway Alarm with 2 Sensors – Secure Your Property
$75.76$126.27
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SALE Wireless RF Door Entry with Receiver Lighting Control By Defiant with Batteries
$7.77$12.95
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SALE SENSOR SWITCH CMRB 10 Occupancy Sensor,PIR,2463 sq ft,White
$29.99$49.99
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SALE 1/2 Mile Wireless Driveway Alarm with 2 Sensors – Secure Your Property
$92.14$153.57
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SALE 1/2 Mile Wireless Driveway Alarm with 2 Sensors – Secure Your Property
$72.00$120.00
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SALE 2pk Door/Window Alarms, Battery Powered, Adhesive Mount, Security
$23.27$38.78
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SALE Sabre 2pk Door/Window Alarms: Security Sensors,Adhesive Mount, Battery Powered
$23.27$38.78
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SALE Barrier Fence Alarm Perimeter Wall Waterproof Dual Beam ABT-100
$44.99$74.99
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SALE Barrier Fence Alarm Perimeter Wall Waterproof Dual Beam ABT-100 Transmitter Only
$11.99$19.99
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SALE 1/2 Mile Motion Sensor Security Alert System with 3 Sensors Included
$111.58$185.97
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SALE NEW SimpliSafe Home Door And Window Entry Sensor ES3
$14.49$23.99
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SALE Driveway Alarm -1/2 Mile Long Range Solar Driveway Alarm System Weatherproof...
$77.38$128.97
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SALE 1/2 Mile Long Range Solar Wireless Driveway Alarm System Weatherproof Outdoo...
$77.38$128.97
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SALE NWB Battery Operated Wireless Driveway Alarm Alert Security System Bunker Hill
$13.99$22.99
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SALE Bosch ISC-CDL1-WA15 Motion Detector NEW Sealed Box
$25.00$40.72
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SALE Pack Of 2 Globe Wi-Fi Smart Motion Detector No Hub Required Battery Operated
$14.98$23.99
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SALE NEW SimpliSafe Home Door And Window Entry Sensor ES3
$14.95$23.99
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SALE Parallax 555-28027 PIR Sensor Passive Infrared Motion Sensor New Sealed
$9.00$14.29
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SALE SimpliSafe Door Entry Sensor ES3 Gen 3 White New in Box Free Shipping
$15.00$23.99
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SALE EDISHINE Motion Sensor, Automatic Dusk to Dawn,Detection Range,Brown,Floodlight
$13.99$21.99
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SALE Moen 920-004 Smart Leak Detector
$56.36$88.00
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SALE Flume Smart Home F2100 Water Leak Detector *SENSOR ONLY
$22.75$35.00
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SALE 3x Northern D15WU Surface Mount Siren 15 Watt Dual Tone White Yelp Steady w546
$19.49$29.99
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SALE Bosch Pro-Grade ZigBee Wireless Motion Detector ISW-ZPR1-WP13 New in Box—-5
$12.99$19.99
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SALE GE Personal Security Window/Door Alarm, Battery Operated, 5- Pack, 45987
$16.25$25.00
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SALE HUBBELL/BRYANT MS1200I PIR WALL SWITCH, IVORY, 1200 SQ FT, 120/277 VAC 60Hz, NIB
$29.25$45.00
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SALE BRYANT MSCM1000-DC MOTION SWITCH (NEW)
$25.35$39.00
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SALE 2pk Door/Window Alarms: Security Sensors, Self-Monitoring, Adhesive Mount
$28.59$43.98
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SALE Wireless Motion Detector Sensor System with Driveway Alarm
$32.49$49.98
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SALE 3x Tyco DSC PowerG Wireless Indoor PIR/Pet Immune 433MHz Motion Detector
$97.50$150.00
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