Magnetic Reed Switch MC-32 NC Surface Mount Wired Security Window Door Contac...
$19.53
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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 Auto-Sensing Motion Switch AC100-240V ABS Flame-Retardant for LED Lamps 200W
$12.61$13.42
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SALE AC 85-265V Motion Infrared Sensor Switch For Outdoor Use 180° Detection Range
$12.61$13.42
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SALE Smart WiFi Temperature Humidity Sensor Meter LCD Hygrometer Thermometer Monitor
$20.30$21.60
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SALE ABS Water Leak Alarm Flood Level Overflow Detector Sensor Home Security
$10.62$11.30
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SALE New 110db Infrared Motion Sensor Home Garage Alert Security System
$19.55$20.80
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SALE Wall Mounted Automatic Door 24.125Ghz Microwave Motion Sensor,Autodoor Sensors
$19.93$21.20
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SALE New DC 10 x RC-33 NC Wired Door Contact Sensor Alarm Magnet Reed Switch
$13.19$14.03
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SALE 1PC Automatic Light Sensor Control Switch DC 8V-50V Photocell Light Switch
$12.71$13.52
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SALE 20M Single Beam Detector Alarm Photoelectric Infrared Laser Sensor Anti Theft B
$15.56$16.55
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SALE Auto ON OFF Detector Infrared PIR Motion Sensor Switch For Led Light Strip b
$11.38$12.11
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SALE AC 110V 220V PIR Infrared Body Motion Sensor Detector Control Switch Light Lamp
$10.43$11.10
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SALE Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen
$10.43$11.10
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SALE 5-24V USB Port Detector Infrared PIR Motion Sensor Switch For Led Light Strip aa
$11.38$12.11
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Vintage Equity Door Alert Model #172 New Rare Made In Hong Kong
$16.99
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In-Wall PIR Motion Sensor Light Switch, Single Pole Occupancy Sensor Switch, Mo
$51.99
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12 Inch LED Flush Mount Ceiling Light Fixture, 5000K 12 Inch, Daylight White
$29.52
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Solar Motion Sensor Alarm 129Db with Flashing LEDs - 4 Pack Green
$82.99
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Smart Home Alarm System - 2.4G WiFi Motion Sensor Kit with App Alerts
$99.99
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SALE Bunker Hill Security Wireless Driveway Alert System Model 69590 Range 200 Ft
$17.95$28.99
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X10 Active Home Active Eye Indoor/Outdoor Motion Sensor Model MS14A Sensor X2
$22.03
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5X Water Sensor Alarm Leak Detector 120db Water Leak Detector
$29.99
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SALE Solar Outdoor Motion Sensor Alarm-129db Loud Siren Lamp Noise Maker, 4 Workin...
$32.79$40.99
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SALE Solar Outdoor Motion Detector Sensor Alarm, Personalize Recording Siren & Str...
$44.79$55.99
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B-Hyve Smart Flood Sensor 3-Pack with Wi-Fi Hub
$117.29
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SensorSwitch WSD PDT WH Motion Detector Switch 120/277 VAC
$49.99
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$99.99
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ECOELER Motion Sensor Light Switch Occupancy Wall Switch Single Pole UL
$19.99
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Re611p Indoor Motion Sensor with Pet Connect+ Encrypted Alula
$39.99
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SALE Solar Outdoor Motion Sensor Alarm 130db Loud Dog Bark Gunshot Sound 2pack
$94.49$104.99
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Mighty Mule Wireless Driveway Alarm System - FM231
$64.95
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Hosmart 1/2 Mile Driveway Alarm Wireless Outdoor Motion Sensor Security System
$78.09
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Motion Sensor Light Switch, PIR Motion Detection Wall Switch with Adjustable Sen
$23.32
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AC 85-265V Professional Motion Infrared Sensor Switch For Outdoor 180° Detection
$12.49
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Infrared Motion Sensor Switch 140° Detection Angle AC100-240V for Public Places
$12.49
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Effective Device Water Leak Alarm Flood Level Overflow Detector Security
$10.52
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10ft-23ft Infrared Motion Sensor Home Garage Alert Security System
$19.35
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Automatic Door 24.125Ghz Microwave Motion Sensor,Autodoor Motion Tracking
$19.73
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Smart LCD Thermometer Hygrometer Wi-Fi Temperature Humidity Sensor Monitor
$20.11
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New 10 x RC-33 NC Wired Door Contact Sensor Alarm Magnet Reed Switch 7-17mm
$13.06
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Automatic Light Sensor Control Switch DC8-50V Photocell Light Switch Accessory
$12.59
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3-5m Automatic Body Infrared PIR Motion Sensor Detector Switch For LED light E
$10.33
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12~24V Home Security One Beam Alarm Photoelectric Infrared Laser Sensor Detector
$15.41
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Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen E
$10.33
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5V-24V PIR Infrared Ray Motion Sensor Switch USB/DC LED Detector Switching
$11.27
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5-24V USB Port Detector Infrared PIR Motion Sensor Switch For Led Light Strip dd
$11.27
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Upgraded Smart Water Leak Detector 1S with 1804 Ft Ultra-Long Range, Wifi Water
$119.99
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SALE Wireless Outdoor Motion Detector Solar Powered Long Range Security Alert
$113.39$125.99
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