SALE ABS Water Leak Alarm Flood Level Overflow Detector Sensor Home Security
$10.34$11.49
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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 
SALE Auto-Sensing Motion Switch AC100-240V ABS Flame-Retardant for LED Lamps 200W
$12.48$13.42
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SALE 20M Single Beam Detector Alarm Photoelectric Infrared Laser Sensor Anti Theft B
$15.39$16.55
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SALE Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen
$10.32$11.10
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Reliance Home Cabin Warning System THP201 Remote Monitoring Phone Flood Alert
$69.99
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(2) Reliance Controls Portable Wedge Alarm THP215 & (1) Window Alarm THP213 -NEW
$27.00
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SALE ON/OFF Detector Infrared PIR Motion Sensor Switch For Led Light Strip 5-24V
$11.27$11.99
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DC8-50V Photocell Light Sensor Switch For Automatic Switching Lights Control
$12.99
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NEW Qolsys IQ Mini Shock-S IQSM Encrypted Door Window Shock Sensor 319.5MHz
$29.99
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Chamberlain Weatherproof Outdoor Wireless Motion Alert Add-on Sensor CWPIR NEW
$149.99
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SALE Wireless Driveway Alarm 1800ft Solar Motion Sensor, Weatherproof, Rechargeabl...
$94.20$117.75
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SALE 10 Sets Pack of Wired Surface Mounted Alarm Magnetic Contacts Door Window Reed S
$21.99$22.99
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SALE GE Choice Alert Wireless Alarm System Control Center Starter Kit, 45142
$42.00$49.99
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SALE SimpliSafe Smart Indoor Water Sensor, Wi-Fi Connected Wireless (Battery) - White
$18.00$22.48
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SALE 2-Pack 90dB Door Window Alarms for Ultimate Home Security & Kids Safety
$9.95$10.47
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Ubiquiti Camera G5 Flex UVC-G5-FLEX - NEW SEALED
$207.99
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Honeywell Ademco 5822T Wireless Tilt Sensor Transmitter
$35.00
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Solar Driveway Alarm Wireless Outdoor Motion Sensor Alert System
$92.99
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Security System Anti-theft Alarm Doorbell Welcome Remind PIR Sensor Sensitive US
$21.59
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Waterproof Wireless Intruder Alarm Glass Break Sensor Outdoor Driveway Alarm Kit
$23.52
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Electrical Indoor Welcome Alarm Detector Bell Chime Wireless 433MHz Mute Flash*2
$41.95
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2Set Wireless PIR Motion Sensor Detector Home Security Doorbell Business Welcome
$42.99
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Remote Control Wireless Driveway Motion Sensor Alarm 8 Chime Bell Loud Horn 1Set
$30.69
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Honeywell FG-730 FlexGuard Dual Tech Glassbreak Detector
$31.00
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Wireless PIR Motion Sensor Detector Home Security Doorbell System Alarm w/ Flash
$21.59
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Honeywell 5800PIR-RES Wireless Motion Sensor
$28.00
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3 Wireless Motion Sensor Detector Gate Entry Door Bell Welcome Chime Alert Alarm
$58.98
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Indoor PIR Motion Sensor Detect Helper Sensing Courier Doorbell Burglar Alarm US
$23.48
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Wireless Infrared Motion Sensor Alarm Alert 918ft Long Range Entry Doorbell 4PCS
$71.99
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PIR Motion Sensor Alarm Workplace Back Passerby Detector Mute Flashing Reminder
$22.99
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SALE High Sensitivity Water Leak Detector - Underground Pipe Leak Monitor with Earpho
$43.49$57.99
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Solar Outdoor Motion Sensor Alarm-129Db Loud Siren Lamp Noise Maker, 4 Working M
$46.99
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Solar Motion Sensor Detector Siren Sound Alarm LED Warning Strobe Flashing Red L
$39.99
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2 Sets Magnetic Reed Switch NC NO Door Window Alarm Contact Sensor 5V 24V
$12.49
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Wireless PIR Motion Detector Welcome Chime Alarm Entry Door bell 3 RECEIVERS
$40.99
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Kidde Smart Water Leak and Freeze Detector WiFi Alexa Google 60WLDR-W Lot Of 2
$29.99
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Home Shop Welcome Chime Bell Indoor Security Wireless Remote Control DIY Pairing
$26.92
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SALE Onforu Motion Sensor, Dusk to Dawn Detector, Timer, Adjustable Detection Distanc
$18.04$18.99
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Shop Entrance Infrared Sensor Welcome Anti-theft Detector Chime Alert Security
$26.98
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5 Brand New 2 Packs Of GE audible Window/Door Alarms 10 Total Alarms Battery
$40.00
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JOHNSON CONTROLS PGP9976 PowerG + Wireless Smoke and Heat Detector
$74.99
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SALE 30 x RC-33 NC Recessed Wired Door Contact Sensor Alarm Magnetic Reed
$38.43$40.45
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OUDAER Solar Outdoor Motion Sensor Alarm - Dog Barking & Gunshot Green&Red
$40.99
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SEEBLEN Track Light Modern Ceiling Spot Lighting 1-light(2 pack), Black
$60.99
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Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen F
$6.78
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SALE New Barracuda Water Detector Text Email Control Tower 691-3703
$38.71$45.54
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Govee Water Detector with Wi-FI Gateway | New Pack of 3 | Model H5054 + H5040
$24.99
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SALE New in Box! Infrared Detector Portable Handheld Anti-Surveillance - XO-CRP01
$24.65$29.00
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