NEW Ring Alarm Motion Detector 4SP1S7-0EN0 White 1st Generation w Mounting Kit
$19.99
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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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Hubbell Control Solutions NXSMP2-LMO Hardwired In/Outdoor NX occupancy Sensor
$39.65
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SALE NOx Sensor Thread Chaser M20 12220 LISLE 12220 83045122203
$18.40$20.99
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Visonic MCT-241 (MD) Waterproof Wireless PowerCode Fall Detector-(315 MHZ)
$97.86
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DSC BV-500GB - Ceiling Mount Pir Glasbrk C&t
$50.00
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Resideo FG-1615T FlexGuard Glassbreak Detector NEW Sealed Honeywell Alarm Sensor
$59.00
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Brickstream Counting Tracking Sensor Camera 2300M-BC25W
$89.99
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Kidde Smart Water Leak and Freeze Detector WiFi Alexa Google 60WLDR-W Lot Of 2
$35.99
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$9.99
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TREEWELL 240-Degree Replacement Motion Sensor, Adjustable LUX(5-300) & Time & De
$25.46
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Wireless Motion Sensor Alarm 125dB Loud PIR Detector with Remote Control
$43.32
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Napco iSecure Complete Alarm System Kit ISEC-KIT2 NEW
$200.00
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Motion Sensor Alarm Indoor Wireless Motion Detector Siren Strobe
$41.58
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Hive Window or Door Sensor Smart Home Wireless Contact Sensor WDS301 New Sealed
$5.00
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Doberman Security Window Door Alarm Kit SE-0130 Sealed Brand New
$11.86
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VIM Tools Ep20- TORX Plus Socket, 1/2 Inch Square Drive, Satin Chrome
$43.02
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MINICOAST Elite M8 Anti-Spy Detector Device, Black Anti-spy Detector
$13.00
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Infrared Sensor Switch AC100-240V Brand New 1PCS for Office & Home Lighting
$8.72
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New ABS Water Leak Alarm Flood Level Overflow Detector Sensor Home Security
$6.21
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26cm Sensor Switch Infrared Human Body Sensing Switch cabinet Sensing
$6.91
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Wall Mount 24.125GHz Human Inductive Motion Microwave Radar Sensor For Elevators
$17.32
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New Infrared Motion Sensor Home Garage Alert Security System DIY Your Home
$18.51
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Microwave Body Induction Module 24GHz CDM324 5mw Radar Induction Switch Sensor
$6.91
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AC220V 200W Human Body Infrared Sensor Switch LED Light Automatic Controller
$6.84
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Water Leak Sensor Detector Flood Alarm for Basement RV Moisture 120Db Work Alone
$29.99
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3-5m Automatic Body Infrared PIR Motion Sensor Detector Switch For LED light I
$5.44
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Auto ON OFF Detector Infrared PIR Motion Sensor Switch For Led Light Strip h
$8.31
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Waterproof LED Solar Alarm Warning Light Sensor Lamp Alert Remote Control F
$13.51
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DELIPOP Modern LED Ceiling Light, 22W 6500K Flush Black-6500K, Black-6500K
$38.76
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Brand New SimpliSafe Home Security Water Sensor WT3 Flood Sensor
$19.95
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2Sets Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security
$15.20
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Matte Black Motion Sensor Light Switch - No Neutral Wire, Listed Design
$24.99
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5V-24V PIR Infrared Ray Motion Sensor Switch USB/DC LED Detector Switching j
$11.87
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Type-C Charging Thermometer Hygrometer Wi-Fi Temperature Humidity Sensor Monitor
$21.18
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Easy To Remove Water Leak Alarm Flood Level Overflow Detector Sensor New
$11.08
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AC 85-265V Motion Infrared Sensor Switch For Exhaust Fan 180° Detection Range
$13.16
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Solar Outdoor Motion Sensor Alarm - Dog Barking & Gunshot Sound, Support Recordi
$51.99
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1/2 Mile Long Range Solar Wireless Driveway Alarm System IP65 Weatherproof Outdo
$55.99
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SALE Effective Device Water Leak Alarm Flood Level Overflow Detector Security
$9.94$11.30
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Wireless Motion Sensor Alarm System, Long Range Driveway Alert, 4 Detectors, 38
$71.99
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Motion Sensor Door Chimes Outdoor Doorbell Wireless Infrared Motion Sensor RCJN
$23.73
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SALE Low-Cost Water Leak Alarm Flood Level Overflow Detector Sensor Home Security
$9.80$11.39
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SALE Smart Radar Motion Light Adapter - E26/E27 Screw-in, 1-Pack
$45.59$56.99
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Professional Water Pipe Leak Detector High Sensitivity For Underground Detection
$24.88
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SALE Automatic Water Leak Detector w/ Sensors & Stut-off Valve Water Leak Detecting
$70.60$85.00
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SALE Visonic Clip SMA White 2.4GHz Handheld Wireless Curtain Detector New
$11.90$14.00
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AC 85-265V Motion Infrared Sensor Switch For LED Lights 180° Detection Range
$11.40
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PIR Motion Sensor Wall Switch AC100-240V Professional for Lighting Maintenance
$8.55
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