APEC WATER WiFi Water Leak Detector 3 Pack App Connected Alerts w/ Sound IP66
$26.99
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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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NEW Visonic Ltd SPY-1 Wired Long Range PIR Passive Infrared Motion Detector
$20.00
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New Effective Device Water Leak Alarm Flood Level Overflow Detector Security
$6.36
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SALE HKZTUY Ceiling Fan LED Light Replacement Panel, 18W 4.92 in, Inch, White
$15.66$19.35
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Vintage General Electric Zonar Burglar Alarm 8250-003 Brown Security Ireland
$23.99
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Flood Buzz Blue Water Leak Alarm Siren 110 DB Sensor Battery New
$7.97
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Optex DX-60 Wired Indoor White Wall Mounted Motion Sensor Detector
$15.84
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Perfect Security Alarm for Home Doors & Windows 4 pcs -90 dB- Item Brand NEW
$12.00
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Motion Sensor Alarm Indoor: Wireless Motion Detector Alarm with Siren & Strobe (
$40.55
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SALE Wireless Caregiver Pager Motion Sensor Alarm Indoor Room Bed Alarms and Fall ...
$35.14$36.99
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DSC TYCO PG9902 Outdoor Wireless Curtain PIR Detector Alarm System Add On New
$89.99
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Visonic Next K9-85 PG2 Pet Motion Detector 915-0 MHz Alarm Smart Home New
$39.99
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SALE *Kidde WiFi Water Leak Detector & Freeze Alarm, Alexa Device, Smart Leak
$13.00$15.99
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Wireless Infrared Sensor Welcome Doorbell Alarm System-Home & Office US Standard
$23.29
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Outdoor Wireless Loud Driveway Alarm for Vehicle Long Range Doorbell Chime Syste
$27.90
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Amhey Wireless Motion Sensor Alarm Indoor Motion Detector Alarm For Business
$32.17
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HOREVO Bathroom Ceiling Light 18W Light, White-18W Lamp Version-1
$51.46
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Shop Store Bakery Welcome Infrared Sensor 433MHz Transmit Chime Remote Control
$26.99
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2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Ma
$14.35
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SALE Brand New 2GIG 2GIG-DW10-345 Wireless Thin Door or Window Sensor, Battery Magnet
$21.55$24.49
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ONEVER Motion Sensor Outdoor Switch PIR, Light Beam Sensing Switch with Relay...
$11.91
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Lot Of 3 LINEAR 5000 PASSIVE INFRARED DETECTORS, 50S40 Wireless, NIB
$45.00
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Expandable Driveway Alarm System with 1/2 Mile Range & Advanced Motion Detection
$75.99
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Long Range Driveway Alarm - 1 Mile Wireless Motion Detector System
$115.99
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Wireless PIR Motion Sensor Alarm Driveway Alert 918ft Entry Doorbell w/ 6 Sensor
$90.71
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Edwards Signaling HPSA15R2570 25/70V 15 Watt Red Fire Speaker
$99.99
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ONEVER Motion Sensor Outdoor Switch PIR, Light Beam Sensing Switch with Relay...
$12.23
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Lot of 10 ADT Resideo SIXCTA Door/Window Contact Wireless Sensor Firmware 4 -New
$149.95
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FlexGuard FG-830 Flush Mount Glass Break Sensor
$65.00
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MC 31 Magnetic Door Sensor Pack of 5 White Surface Mount Security Switch
$14.99
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Vintage Visonic Fox Passive Infrared Motion Detector White 1P Fox-P B6
$25.00
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Remote Control Wireless Driveway Sensor Alarm Receiver Bell Loud Welcome Detect
$31.89
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Battery-Powered Smart Wi-Fi Door and Window Sensor, Easy Setup - No Hub Required
$71.50
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Home DIY Electric Infrared Motion Sensors & Receivers Chime Bell Flashing Remind
$52.99
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Ring 4SP1SZ-0EN0 Motion Detector Alarm White
$18.99
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All New Pro - Professional GPS Performance Meter, up to 25Hz GPS dragy Pro
$298.50
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Lutron MS-OPS5AM-IV Ivory Digital Multi-Location Switch Occupancy Sensor 5A 120V
$25.00
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Long Range Driveway Alarm Motion Sensor 1 Mile Wireless Security System Kit
$101.54
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Lot of 2: Globe ARC LIGHT, motion sensor light, battery operated New
$24.96
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Bunker Hill Security Motion Detector Alarm Set Model 42768 NEW SEALED
$21.99
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10 NEW Honeywell 5816 CASE , White
$99.50
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120dB Solar Powered Driveway Alarm System - Expandable Motion Detection Alert
$94.99
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ADEMCO 1992 Wired Indoor Motion Detector White Motion/PIR NOS
$24.01
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The Watchdog Water Alarm Early Warning Leak Detector BWD-HWA W/ Damaged Package
$10.00
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FortrezZ Wireless Water & Freeze Alarm
$19.00
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1080P Mini Camera WiFi HD IP Camera Camcorder Home Security Cam + 32GB SD Card
$13.99
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Cooper Wiring Device White Occupancy Sensor Switch Automatic On 600W/VA
$18.95
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Sealed GE Smart Home Indoor Magnetic Window Alarm Sheds Garage Boats. CB1
$8.99
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