Wireless Solar Driveway Alarm - 1/2 Mile Range, Custom Tones, Weatherproof
$173.99
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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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Outdoor Dog Barking Alarm & Motion Detector - 3 Sensors + 1 Receiver
$128.99
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Solar Wireless Driveway Alarm - 2600FT Range, 36 Melodies, 4 Zones, Weatherproof
$116.99
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Solar Motion Sensor Alarm with 129Db Barking Sound & Strobe Light for Home
$161.99
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Barking Dog Motion Sensor Alarm with 360° Detection - 2 Pack
$109.99
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Halloween Solar Driveway Alarm with Spooky Music - 1/2 Mile Range!
$93.99
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Motion Activated Barking Dog Alarm - Waterproof Security Sensor for Home & Yard
$102.99
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SALE Smart Home Presence Sensor FP2 - Indoor Wired Radar Sensor with Light Automation
$101.91$127.39
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AC100-240V PIR Motion Sensor Switch for LED Lights Auto On/Off 140° Detection
$8.55
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Low-Cost Water Leak Alarm Flood Level Overflow Detector Sensor Home Security
$6.17
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Digital Hygrometer Thermometer WiFi Smart Temperature Humidity Sensor Meter
$18.51
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24GHz CDM324 Microwave Radar Sensor Module Human Motion Detection Switch
$6.85
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PIR Motion Detection Sensor Lamp Switch Infrared Human Body Induction Parts
$5.07
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IR Infrared Body Motion Sensor Auto Light Lamp Control Switch Parts AC220V 200W
$6.78
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5-24V Auto ON OFF Detector Infrared PIR Motion Sensor Switch For Led Light Strip
$8.22
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Automatic Water Leak Detector with Sensors and Shut-off Valve
$78.59
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240° & 360° Replacement Motion Sensor, Adjustable Time & Detection Sensitivit...
$30.79
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SALE Auto ON OFF Detector Infrared PIR Motion Sensor Switch For Led Light Strip h
$10.60$12.47
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SALE 3-5m Automatic Body Infrared PIR Motion Sensor Detector Switch For LED light I
$9.72$11.43
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Vivint Wireless Smart Home Glass Break Sensor V-GB2-345
$19.00
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SALE Automatic Water Leak Detector with Sensors and Shut-off Valve
$78.60$125.55
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SALE 20M One Beam Infrared Sensor Detector Alarm Photoelectric Infrared Laser Sensor
$14.50$16.29
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SALE 5V-24V PIR Infrared Ray Motion Sensor Switch USB/DC LED Detector Switching n
$10.56$11.87
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SALE 20m Single Beam Alarm Photoelectric Infrared Detector Alarm Home Security C
$14.44$16.23
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Homesafe Wireless System t015rpk2 Auto-Dialer Motion Detector Keyboard NEW OS6
$44.00
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SALE 129dB Outdoor Solar Alarm With Motion Sensor 4 Modes Dog Barking Gunshot Sounds
$25.46$26.80
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SALE AC 85-265V Motion Infrared Sensor Switch For LED Lights 180° Detection Range
$11.16$11.75
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SALE 2pcs PIR Motion Sensor Switch Wall Light Switch For Working Humidity: <93%RH
$11.96$12.59
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SALE <93% RH Sensor Switch Infrared Human Body Sensing Switch cabinet Sensing
$6.64$6.99
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SALE DC 8V-50V Photocell Light Sensor Switch For Automatic Switching Lights Control
$8.24$8.67
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SALE Small Volume Microwave Body Induction Module Radar Induction Switch Sensor
$6.64$6.99
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SALE New DC 10 x RC-33 NC Wired Door Contact Sensor Alarm Magnet Reed Switch
$9.11$9.58
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SALE 110 dB Water Alarm w/Detachable Sensor for Hard-to- Areas BWD-HWA
$22.15$24.89
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SALE Raddy R3 Remote Sensor | for DT6, WM6, WF-55C PRO Weather Station
$12.74$14.99
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SALE Smart Thermometer Hygrometer Wi-Fi Temperature Humidity Sensor Home Improvement
$17.95$18.89
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SALE Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen Timer
$6.31$6.64
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SALE DC USB Body Infrared PIR Motion Sensor Switch Detector Switch For LED Light k
$7.97$8.39
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SALE Waterproof LED Solar Alarm Warning Light Sensor Lamp Alert Remote Control N
$12.96$13.64
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SALE Home Wireless Driveway Alarm Infrared Motion Sensor Garage Alert Security System
$19.94$20.99
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Smart Occupancy Sensor Light Switch by Maestro - Ideal for Bathrooms & Garages
$39.99
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NIP Wireless Security Window & Door Alarm Set No Tools Needed
$12.99
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Qualirey 4 Pcs Solar Outdoor Motion Sensor Alarm Stake Animal Deterrent Dog
$137.58
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Tuya Zigbee Pressure Sensor Multifunctional Occupancy Gravity Detector Strip for
$43.42
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SALE Shock Vibration Knock Sensor For Car Alarms Antitheft Products Security Systems
$15.49$16.30
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SALE SimpliSafe MS3 Motion Sensor Detector Security System - NIB-B1A
$15.00$19.98
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Quirky + GE Tripper Smart Door & Window Sensors – 2 Pack
$22.99
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Ring Alarm Motion Detector (2nd Gen) White 2 Pack Brand New Factory Sealed
$34.25
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Ring 5SM1S8-WEN0 Outdoor Motion Sensor - White
$13.95
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