130dB Solar Outdoor Motion Alarm - Adjustable Volume & Custom Alerts for Safety
$52.97
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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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Water Alarm Convenient Water Reliable Water Leak Detectors for Household
$13.03
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SALE 2pcs PIR Motion Sensor Switch Wall Light Switch For Power Consumption: 0.5W
$14.02$16.49
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SALE Magnetic Window & Door Alarm 2-Pack)
$29.59$31.15
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SALE 2 Pack Door Stop Alarm Door Stopper W/ 120DB Security Alarm Floor Wedge Door
$18.70$19.68
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Leviton OSFHU-I4W Occupancy Sensor, Fixture Mount Hi Bay, PIR, 480v
$35.00
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SALE ALINCO EDC-208R 5-unit charging stand for DJ-PX5/EDC-162
$103.49$108.94
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2pcs PIR Motion Sensor Switch For Ambient Light: 2LUX~2000LUX (Adjustable)
$12.22
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Wireless Solar Driveway Alarm - 1/2 Mile Range, Weatherproof, Dual Detection, DI
$63.99
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The Watchdog Water Alarm Early Warning Leak Detector No Install. Battery Powered
$18.00
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Honeywell SiXPIR Wireless Indoor PIR Motion Sensor for Lyric, White
$20.00
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ALTA Wireless Risk Limiter Temperature Sensor ZTL-G2SC1
$34.99
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Entry Sensor with Dual-Side Detection, Bypass Button, Long Battery Life & Range
$59.99
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SALE Solar Wireless Driveway Alarm System 1/2 Mile Range, 1 Receiver & 2 Solar Sen...
$111.99$139.99
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Interarms PDT PORTA-D-TECT Portable Ultrasonic Detection &Alarm System PDT- NC
$11.99
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SALE DC 12V-48V Dusk To Dawn Photocell Light Switch 8-50V Light Sensor Control Switch
$12.15$14.46
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SALE Automatic Sliding Door Opener Safety Beam Sensor Infrared Anti-Clip Device h
$24.49$29.15
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SALE Universal Contact Sensor with Alexa Compatibility - Secure Outdoor Monitoring
$43.19$47.99
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SALE Outdoor Weather-Resistant Driveway Alarm System - 1/2 Mile Long Detection Range
$75.59$83.99
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Honeywell Home Smart Room Sensor Wireless White for T9/T10 Pro RCHTSENSOR
$34.99
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Yolink Lora Smart Door Sensor Starter Kit: - 1/4 Mile Open-Air Range, Door Left-
$82.88
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Mini PIR Motion Sensor Light Switch AC110220V Time Delay Adjustable Relay
$22.76
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Voice Alert Motion Sensor NOT A TOY!
$65.00
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SALE Low Voltage PIR Ceiling Sensor CS-PL Motion Detector Energy Saving ADA
$20.65$29.50
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NEW Optex TD-20U Indoor/Outdoor Sensor Transmitter
$71.25
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Motion Detector Sensor Alarm, Driveway Alarm Wireless, Home Security Business M
$28.00
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Automatic Light Sensor Control Switch DC 8V-50V Photocell Light Switch Repair
$14.06
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GoveeLife H5059 H5044 Water Leak Detectors. Smart Gateway Plus 5 Detectors.
$33.00
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Motion Switch Indoor Plug in Motion Light Sockets Adjustable Motion Activated...
$28.28
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SALE Solar Sound and Light Alarm Motion Sensor 129db Ou
$68.87$83.99
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20m Single Beam Alarm Photoelectric Infrared Detector Alarm Home Security NEW
$15.57
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10 x RC-33 NC Wired Door Contact Sensor Alarm Magnet Reed Switch 7-17mm
$13.20
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5V-24V PIR Infrared Ray Motion Sensor Switch USB/DC LED Detector Switching
$11.03
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3-5m Automatic Body Infrared PIR Motion Sensor Detector Switch For LED light E
$10.11
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Lot Of 2 Vintage Safe House Dual-Element Infrared Motion Sensor No. 49-531
$40.00
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125dB Motion Sensor Alarm, Wireless Indoor PIR Motion Detector with 328ft Rem...
$30.85
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SALE 20m Anti-Theft Alarm Infrared Detector Sensor Photoelectric Home Security System
$14.43$16.59
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Ring Alarm Motion Sensor Detector (Gen 1) (4SP1S7-0EN0)
$10.00
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Blue By ADT Door & Windows Sensors. Set Of 5 New In Box
$30.00
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SALE RAYZEEK Wireless Motion Sensor Controller KitNo Wiring Mini PIR Sensor Switch...
$43.49$48.32
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Leviton Motion Sensor Light Switch, Motion Activated, AutoOn/AutoOff or Manua...
$28.69
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SALE EverElectrix 4 Pack Motion Sensor Light Switch, Indoor Occupancy & Vacancy Se...
$71.61$79.57
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ELEGRP Matte White Single Pole Occupancy Motion Sensor Light Switch, Need Neu...
$25.82
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ECOELER Motion Sensor Light Switch, No Neutral Wire, PIR Infrared Motion Acti...
$21.51
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SALE Leviton Decora 120/277Volt Wall Switch Occupancy Sensor, ODS10IDE, Black
$67.64$75.16
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ECOELER PIR Ceiling Sensor Switch, HardWired Occupancy Motion Sensor with Sli...
$24.38
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Samsung SmartThings Motion Sensor IM6001-MTP
$25.49
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Acuity 218Y8Y WSX Series Dual Relay Wall Switch Occupancy Sensor 120-277VAC
$31.95
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