NEW! FIRST ALERT 4 Pack Premium Window & Door Security Alarms, SEALED,STAY SAFE
$19.90
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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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SimpliSafe Keypad Home Security System SSKP3 with Mount
$24.88
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abyliee Upgraded Hidden Camera Detector & Anti-Spy Device
$29.49
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Ceiling Sensor Light Switch 360 Degree Occupancy 10A 120V HardWired Motion
$33.08
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Mace Security Alarm Motion Detector
$59.00
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Hager Motion movement Detector PIR Sensor 52370 360° 2x untested
$62.64
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Motion Sensor Outdoor Switch PIR, Light Beam Sensing Switch with Relay Output...
$15.99
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Outdoor PIR DC 12V Automatic Infrared PIR Motion Sensor Switch for LED Flood ...
$17.99
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SALE EML Technologies E200MQW-C Motion Sensor Security Flood Lights White
$37.54$46.92
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SENSOR SWITCH NPODM-2P-IV NLIGHT PUSH BUTTON WALLPOD 2-CHANNEL SWITCH, IVORY
$145.00
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Intellisense Intellibeam IB-100D Active Infrared Beam Sensor 100ft
$30.00
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EDISHINE Motion Sensor, Automatic Dusk to Dawn, 180 Degree Replacement White
$10.99
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SALE Hiletgo Outdoor PIR DC 12V Automatic Infrared PIR Motion Sensor Switch for LED
$12.06$12.70
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SALE Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White MC-38
$12.87$15.70
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SALE 10pcs RC-36 N.C. Recessed Magnetic Wired Door Contact Sensor Alarm Reed Switch
$25.96$31.66
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Pure Sine Wave Inverter, 2500 Watt Power Inverter, DC 12V to AC 120V Car Inverte
$249.13
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SALE NEW Bosch ZX794Z Alarm System Long Range PIR Motion Sensor
$37.49$49.99
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hepside 12Inch Flush Mount Light Fixture White, 28Watt, 12Inch-1pack, White
$24.99
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![Ooma Motion Sensor [P/N 110-0146-100] Model No. SENSEMO001 White](/img/bt59a3e434abce4179/thumbnail)
Ooma Motion Sensor [P/N 110-0146-100] Model No. SENSEMO001 White
$12.00
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SENSOR SWITCH WSD-VN-I WALL SWITCH SENSOR PIR WITH VANDAL RESISTANT, IVORY
$48.00
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SALE Pack of 1 Dusk-to-Dawn Sensor – White, Certified, 3 Inch Post Mount
$25.30$29.77
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GoveeLife Upgraded Smart Water Leak Detector 1s with 1804 ft Ultra-Long Range
$25.25
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Marine Battery Charger, 3-Bank, 10A 12V Onboard Boat Charger, IP68 Waterproof S
$272.76
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Wireless Window & Door Sensor BLUE By ADT SSH1R0-29 New
$15.00
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Philips Lighting Interact Sensor LCN3120/05 #74545500 IP65 Interact
$115.00
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IntelliSense Dual Tec DT-900 Dual Technology Motion Sensor Commercial Industrial
$99.99
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SALE Leviton ODC0S-I1W 120V 1000W PIR Ceiling Occupancy Sensor Self-Contained - White
$16.00$29.50
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1/2 Mile Long Range Wireless Driveway Alarm- Outdoor/Indoor Motion Sensor&Detect
$87.90
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Bunker Hill 93068 Wireless Driveway Alarm Alert Security System - SHIPS FREE!
$24.99
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SALE SimpliSafe Motion Sensor Detector MS1000 1st Generation!
$11.66$12.95
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ELEGRP 10-Pack Occupancy Motion Sensor Light Switch PIR Auto On/Off Wall Switch
$89.97
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2 GIG - DW30-345 Outdoor Wireless Contact Sensor
$75.00
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SimpliSafe Glassbreak Sensor - Wireless Home Security - Model GB3
$30.00
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NEW HomeSafe 135PLUS Motion Detector Alarm w/ Remote & Magnetic Switch SEALED
$25.00
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Alula Connect+ Wireless Siren RE616
$58.99
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Honeywell Ademco 5890PI Wireless Motion Detector 40lb Pet Immune ADT 5800 Series
$26.50
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SALE One (1) Govee Wi-Fi Thermo-Hygrometer available: Only 1 available - IndoorSensor
$25.00$25.47
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Wi-Fi Water Leak Detector for Home - Smart 2-In-1 Leak & Low-Temperature Sensor
$27.24
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Ring Mailbox Sensor White Up to 3 Years Battery Life 5D22E3
$51.99
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Ring Motion Detector Sensor Newest Model No Base Station Required Sensors needed
$59.99
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SALE Leviton 177IR-IWA Infrared Receiver for Scene Select Dimmer Switch Controllers
$37.99$39.99
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Ring Mailbox Sensor Black Up to 3 Years Battery Life 5D22E3
$51.99
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Flood Gen4, WiFi, Bluetooth, Zigbee, Matter Smart Flood Sensor with Leak Sens...
$61.08
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Portable Outdoor Perimeter Alarm System- 1/4 Mile Waterproof Wireless Motion ...
$91.22
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Solar Driveway Alarm Wireless Outside Weatherproof 1/2 Mile Long Range, Outdo...
$29.34
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125dB Loud Indoor Motion Sensor Alarm with 328ft Remote Control (40ft PIR Det...
$33.26
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Driveway Alarms Wireless Outside Weatherproof - Motion Sensor Alarms System M...
$39.34
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Solar Driveway Alarm Wireless Outside 1800ft Range, Outdoor Motion Sensor & D...
$80.67
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