Wireless Motion Sensor Alarm Indoor-1 PIR Detector + 1 Doorbell Chime, Door Moti
$61.54
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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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Motion Sensor Outlet, Indoor Outdoor Motion Sensor Plug Outlet, Adjustable Sensi
$45.11
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6 Pack Solar Motion Sensor Alarm 129db Outdoor Siren
$141.09
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Qualirey Solar Sound and Light Alarm Motion Sensor 129db 6 Pack
$141.09
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Wireless Battery Operated Door Chime Open Contact Sensor Alarm W/ 500 Ft. Range,
$58.53
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SALE Body Infrared PIR Motion Sensor Switch For LED Light Strip Automatic DC 12V E
$7.81$8.31
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SALE 3-5m Automatic Body Infrared PIR Motion Sensor Detector Switch For LED light
$5.11$5.44
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SALE 5V-24V PIR Infrared Ray Motion Sensor Switch USB/DC LED Detector Switching j
$7.81$8.31
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SALE Automatic Sliding Door Opener Safety Beam Sensor Infrared Anti-Clip Device c
$22.24$23.66
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Emacros Non-App Wireless Driveway Alarm — 1/2 Mile Solar Motion Sensor with Plug
$73.99
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Motion Sensor Light Switch, Occupancy & Vacancy Model Motion Activated Wall Swit
$20.99
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Multi-Technology Ceiling Mount Occupancy Sensor, 24VDC, 35Ma; 1000SF Field-Of-Vi
$115.58
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Automatic Infrared PIR Motion Sensor Switch Auto On/Off Lamp Control Replace Kit
$10.55
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SALE 100 MA 10 x RC-33 NC Wired Door Contact Sensor Alarm Magnet Reed Switch
$8.86$9.43
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High Precision Thermometer Hygrometer Wi-Fi Temperature Humidity Sensor Monitor
$18.51
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SALE PIR Infrared Motion Sensor Detector Auto Switch AC 110V-240V Light Lamp On/Off
$5.31$5.65
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SALE Infrared Motion Sensor Home Garage Alert Security System DIY Your Home
$17.40$18.51
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SALE Easy To Remove Water Leak Alarm Flood Level Overflow Detector Sensor New
$5.77$6.14
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SALE 1 PC Waterproof Solar 6LED Flashing Red Light Motion Sensor Security Alarm Lamp
$17.40$18.51
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SALE High Sensibility Microwave Body Induction Module Radar Induction Switch Sensor
$6.50$6.91
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SALE IR Infrared Body Motion Sensor Automatic Auto Light Lamp Control Switch AC220V
$6.43$6.84
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Black 24.125GHz Human Inductive Motion Microwave Radar Sensor For Automatic Door
$16.97
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4 Modes Solar Motion Sensor Alarm 129dB Outdoor Siren With 13 Sounds For Farm
$28.33
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Ceiling Mount Occupancy Sensor, PIR, 360 Degree, 450 Sq. Ft. Coverage, Self-Adju
$136.99
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Multi-Technology Ceiling Mount Occupancy Sensor, 24VDC, 35Ma; 1000SF Field-Of-Vi
$123.99
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Door Sensor Starter KIT, Matter Compatible, 3X Smart Door Window Contact Sensor
$80.99
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Interior Wireless Replacement/Additional Driveway Alarm Base Station for Outdoo
$76.99
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Motion Sensor - Compatible with Gen 3 Home Security System
$48.99
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Retrofit Alarm Kit | Convert Wired Security Contact Sensors to Smart System | C
$143.99
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Solar Motion Sensor Siren 4 Modes 129dB With 13 Alarm Sounds For Warehouse
$25.10
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AC 85-265V New Motion Infrared Sensor Switch For Outdoor 180° Detection Range
$12.36
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24.125 Human Inductive Motion Microwave Radar Sensor for Automatic Door AC12-24V
$19.52
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110db Infrared Motion Sensor Home Garage Alert Security System
$19.15
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White Smart Thermometer Hygrometer Wi-Fi Temperature Humidity Sensor Monitor
$19.89
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DC8V-50V Photocell Light Sensor Switch For Automatic Switching Lights Control
$12.45
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5V-24V PIR Infrared Ray Motion Sensor Switch USB/DC LED Detector Switching n
$11.15
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Safety Technology EM1212DOC Metal Document Enclosure with Thumb Lock, Red
$153.99
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Outdoor Motion Sensor, 1 Pack, Automatic Dusk to Dawn, Sensor Turns Lights On Wh
$67.91
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AC 85-265V Motion Infrared Sensor Switch For Exhaust Fan 180° Detection Range
$12.36
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3-5m Automatic Body Infrared PIR Motion Sensor Detector Switch For LED light
$10.22
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Easy To Remove Water Leak Alarm Flood Level Overflow Detector Sensor New
$10.41
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New 100 MA 10 x RC-33 Wired Door Contact Sensor Alarm Magnet Reed Switch
$12.92
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Type-C Charging Thermometer Hygrometer Wi-Fi Temperature Humidity Sensor Monitor
$19.89
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Weather Resistant Wireless Motion Sensor Driveway Alarm with Expandable Alerts
$101.89
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Wireless Driveway Alarm - 1/2 Mile Motion Sensor & Weather Resistant System
$87.89
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Doberman Pool Alert Security 100Db Alarm W/3-Button Bypass Code & Entry Sensors
$61.95
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Weather-Resistant 50FT Motion Sensor for Property Security -2 Guarantee
$50.89
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Humidity Sensor Switch for Ventilation Fan, Air Moisture Detection, Bathroom Fan
$60.95
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