SALE Wireless Infrared Gate Beam Sensor Anti Theft Alarm IP55 Waterproof for Station
$30.28$34.41
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Sensors & Motion Detectors
Motion, door/window and glass-break sensors are the trip-wires of a security system. Check what hub or panel they pair with (many are brand-specific and won't mix), wired vs wireless, and battery life for wireless units. For motion sensors, pet-immune designs avoid false alarms. Buying spare or used sensors is fine — just confirm the protocol and that they're compatible with your system.
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SALE 
Wireless 110db Vibration Alarm with Remote - Ultimate Anti-Theft Protection
$26.98
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2GIG Image Sensor 2GIG-IMAGE1 Motion Sensor Digital Still Camera (Brand New)
$65.00
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RING Alarm Wireless Home Or Office Security Kit 5-Piece White 4K11S70EN0
$64.78
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SALE 20-Pack Residue-Free Adhesive Pads for SimpliSafe Sensors - Wood, Metal, Tile
$10.44$10.99
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Weatherproof Solar Driveway Alarm System 2.4G Wi-Fi with Push Notifications
$179.99
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Craftersmark Motion Sensor Garage Light, 20000LM 200W 1 Pack, Screw-in
$34.52
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Ring Alarm Wireless Z Wave Plus Network Range Extender Outlet 1st Gen
$12.00
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Outdoor Solar Motion Sensor Alarm with Dog Bark Sound, 130dB, 3 Modes, 3-Pack
$147.99
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Chamberlain 820CB Replacement Opener Garage Door Safety Sensors, Black Small
$15.00
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Solar Motion Sensor Alarm - 130dB Dog Barking Deterrent with Remote Control, 3 M
$149.99
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Pack Of 7ea- J.LUMI YCA1050 passive infrared Motion Sensor Switch Ceiling Mount
$50.00
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SET OF 2 MR BEAMS MB360XT WIRELESS 200 LUMEN BATTERY POWERED LED FLOOD LIGHTS
$29.99
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Water Alarm Convenient Water Reliable Water Leak Detectors for Household
$13.03
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Chamberlain 820CB Replacement Opener Garage Door Safety Sensors, Black
$13.00
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Chamberlain 820CB Replacement Opener Garage Door Safety Sensors, Black
$13.00
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JMDHKK K18+ Anti Spy RF Bug Trac GPS Signal Detector Hidden Camera Finder NEW OB
$50.00
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SALE 5.8GHz Intelligent Body Induction Switch Microwave Radar Light Sensor Switch DC
$16.48$18.73
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SALE Water Leak Starter Kit: Hub + 4 Leak Sensor 1 Silent, LoRa Long-Range, App/SM...
$86.20$96.85
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129dB Solar Sound & Light Alarm Motion Sensor Outdoor Dog Barking Security
$31.39
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Mini LED Lights, 10 PCS Small Spotlight Battery Operated Tiny SMD Lamp Green
$13.35
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SALE 110 dB Water Alarm w/Detachable Sensor for Hard-to- Areas BWD-HWA
$21.23$23.85
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CVS Symphony Essential Bundle New Fall Sensor Motion Sensor Care Button
$19.91
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Battery-Powered Motion Sensor for Caseta Smart Dimmers & Switches - 60 ft Range
$93.97
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Solar Outdoor Motion Sensor Alarm-Dog Barking&Gunshot Sound,Support Recording
$30.99
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2PCS Solar Alarm Motion Sensor - Solar Sound Light Outdoor Dog Barking Security
$31.78
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OUDAER Solar Outdoor Motion Sensor Alarm - Dog Barking & Gunshot Sound, Suppo...
$36.65
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OUDAER Solar Outdoor Motion Sensor Alarm - Dog Barking & Gunshot Sound, Suppo...
$36.39
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Long Range Wireless Driveway Alarm - Weather Resistant Motion Sensor & 4 Sensors
$164.99
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Motion Sensor Alarm Indoor: Wireless Motion Detector Alarm with Siren & Strobe (
$41.99
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Bright Solar Motion Sensor Alarm 129dB Siren Strobe Light Remote USB Backup
$59.37
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Watt Stopper WA-300-W Passive Infrared Automatic Wall Switch 120- 277V
$60.00
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$62.98
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Automatic Motion Sensor Light Switch Set for Bathrooms & Garages - 2-Pack
$151.99
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SALE Indoor Door & Window Sensor - Hue Bridge Required/-
$123.19$153.99
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Ring Alarm Wireless Home Security Alarm System + Keypad & Sensors - 1st Gen
$42.99
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Conic Motion Sensor LED Light Bar Wireless Auto On/Off Adhesive White Batteries
$7.34
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SALE NEW Ring Alarm Motion Detector (2nd Gen) (1-Pack) - White
$19.00$21.32
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Solar Motion Sensor Alarm Animal Repeller With Strobe Light Gunshot Sound Siren
$30.99
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Ademco 1990 passive infrared detector
$25.00
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Werpower Infrared Motion Sensor Alarm Entry Alert Vistor Doorbell Home Security
$26.82
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SALE Automatic Infrared Motion Sensor Switch, & CUL Listed, for CFL/LED/Bulbs
$51.29$53.99
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SALE NEW Bosch ISC-CDL1-W15G Commercial Series TriTech Motion Detector
$25.00$39.15
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Designers Edge L6020br Motion Sensor, 180 Degree, 70 Ft, Brz, 3In L
$31.85
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DC8-50V Photocell Light Sensor Switch For Automatic Switching Lights Control
$12.99
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ADT SIXRPTRA RF Wireless Repeater for Series Devices White APP 1.31.0 RF6 1.0.43
$78.00
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New DEFIANT Wireless Smart Water Leak Detector SWLZ20BWB w/4" Sensing Cable
$19.99
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Solar Motion Sensor Alarm with Dog Bark Sound and Strobe Light
$42.39
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