AC180-240V 50/60Hz Auto On/Off Light Voice Sound Sensor Switch Time Delay B
$3.21
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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 12-24V Automatic Door 24.125Ghz Microwave Motion Sensor Autodoor Sensors
$42.31$44.54
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SALE 10pcs Wired Door Window Sensor Magnetic Switch For Home Alarm System
$17.65$18.58
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SALE Intruder Deterrent Alarm - 130db Sound with Strobe Light
$45.59$56.99
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Kalium LED Ceiling Light with Remote 2Pack 12 Inch 12inch, Matte Black
$78.29
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Zlepmlla Crystal Black Ceiling Light, Modern Light Fixture 12.2in,
$99.46
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SALE Solar Motion Sensor Alarm, 130db Loud, Strobe Light
$45.59$56.99
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Home Wireless Driveway Alarm Infrared Motion Sensor Garage Alert Security System
$20.57
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SALE Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen F
$6.38$6.71
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Wireless Indoor Motion Sensor Door Bell Shop Visitor Alert Chime Alarm Burglar f
$18.99
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Auto ON OFF Detector Infrared PIR Motion Sensor Switch For Led Light Strip
$8.46
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SALE 3PCS 433MHz Wireless PIR Motion Detector For Home Security Alarm System
$44.17$46.49
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**Magnet only** For TYCO DSC PGP9945E P9M3 Wireless Door/Window Contact Pgp945E
$5.00
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1pc new Honeywell 992AB30AN-A2 Proximity Switch Sensor 992AB30ANA2 fast shipping
$197.80
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Automatic IR Infrared PIR Motion Sensor Body Induction Switch Control Repair Kit
$10.84
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12-24V 24.125GHz Human Inductive Motion Microwave Radar Motion Tracking Sensor
$17.56
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AC110V-220V PIR Infrared Body Motion Sensor Detector Control Light Lamp Switch
$5.80
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Solar Powered Driveway Alarm System - 1/4 Mile Range, Weatherproof Motion Sensor
$159.99
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Freetim Driveway Alarm Motion Sensor - Driveway Alarms Wireless Outside
$44.56
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SALE PIR Motion Sensor Switch Auto-Sensing On/Off AC100-240V for Schools & Buildings
$8.44$8.88
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SALE Automatic Light Sensor Control Switch DC 8V-50V Photocell Light Switch Parts
$8.31$8.74
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PIR Motion Detection Sensor Lamp Switch Infrared Human Body Induction Accessory
$5.24
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Lot Of 2 Ring OEM Alarm Open Window Spare Magnet (2Nd Gen)
$10.00
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SALE 2pcs PIR Motion Sensor Switch Wall Light Switch Delay Time: 5s~8min (Adjustable)
$12.03$12.66
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DC8-50V Photocell Light Sensor Switch For Automatic Switching Lights Control
$13.39
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10ft-23ft Infrared Motion Sensor Home Garage Alert Security System
$18.96
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SALE Brand New 2GIG 2GIG-DW10-345 Wireless Thin Door or Window Sensor, Battery Magnet
$21.55$24.49
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Smart Thermometer Hygrometer Wi-Fi LCD Temperature Humidity Sensor Home Digital
$18.96
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5-24V USB Port Detector Infrared PIR Motion Sensor Switch For Led Light Strip hh
$11.99
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2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Ma
$14.35
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4 Pcs Brown Wired Magnetic Door Window Contact Reed Switch, Surface-Mounted N...
$10.64
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Body Infrared PIR Motion Sensor Switch For LED Light Strip Automatic DC 12V D
$8.46
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Magnetic Reed Switch RC-33 NC/NO Recessed Wired Door Window Alarm, Magneti Do...
$28.77
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SALE Basement Watchdog Water Alarm 110 dB
$23.99$29.99
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Honeywell DT-6360STC DUAL TEC Motion Sensor
$158.03
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Zigbee Door and Window Sensor 3 Pack, Wireless Mini Contact Sensor, Home Automat
$89.99
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Playermaker Connected Footwear Motion Sensors with Charging Case and Straps
$70.00
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Shop Store Bakery Welcome Infrared Sensor 433MHz Transmit Chime Remote Control
$26.99
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AC 85-265V Motion Infrared Sensor Switch For House Garden 180° Detection Range
$11.51
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Outdoor Solar Motion Detector Alarm 129dB 4 Working Modes For Warehouse Garage
$26.26
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Automatic Sliding Door Opener Tool Safety Beam Sensor Infrared Anti-Clip Device
$24.21
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LED Motion Light Adjustable Spotlight Sensor Outdoor Indoor Cordless Patio Lamp
$15.63
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SALE Long Range Wireless Driveway Alarm - Weather Resistant Motion Sensor & Detector
$154.84$162.99
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GE 1087TH Door Surface Mount Terminal Contact Magnetic
$0.99
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Automatic Water Leak Detector with Sensors and Shut-off Valve
$78.59
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Smart Thermometer Hygrometer Wi-Fi Temperature Humidity Sensor For Alexa/Google
$20.11
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45° Infrared Motion Sensor Home Garage Alert Security System
$19.35
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T01 Smart Camera Detector, BRAND NEW IN BOX
$24.00
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