New 10 x RC-33 NC Wired Door Contact Sensor Alarm Magnet Reed Switch 7-17mm
$9.65
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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 Water Overflow Sensor Detector 120dB Water Leakage Alarm System
$15.67$16.49
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1080P Mini Camera WiFi HD IP Camera Camcorder Home Security Cam + 32GB SD Card
$13.99
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Home Security Single Beam Alarm Photoelectric 20M Infrared Laser Sensor Detector
$16.39
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SALE 4 Modes Outdoor Solar Alarm 129dB Motion Sensor With Dog Barking Gunshot Sounds
$25.53$26.87
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High Precision Thermometer Hygrometer Wi-Fi Temperature Humidity Sensor Monitor
$21.39
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Optex DX-60 Wired Indoor White Wall Mounted Motion Sensor Detector
$15.84
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3-5m Automatic Body Infrared PIR Motion Sensor Detector Switch For LED light A
$10.99
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SALE AC 85-265V Replacement Motion Infrared Sensor Switch For Outdoor 180° Detection
$11.23$11.82
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Water Leakage Detection Device Precise Positioning Underground Water Pipe L TWYI
$24.80
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Driveway Alarm 800M Long Range IP55 Weatherproof Solar Wireless Driveway Al HYCJ
$35.41
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HOREVO Upgrade 15 inch Dimmable LED Music 24W-White, 15 white Bluetooth
$86.99
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4 Modes Solar Motion Sensor Alarm 129dB Outdoor Siren With 13 Sounds For Farm
$26.99
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1pc Microwave Body Induction Module 24GHz CDM324 Radar Induction Switch Sensor
$7.06
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SALE Wireless Driveway Alarm System - 1/2 Mile Range Motion Sensor & Weather Resistan
$61.74$64.99
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GRI 29A Standard Surface Mount w/Terminals Up To 1" Gap
$0.99
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Infrared Beam Sensor Outdoor Waterproof Single Beam Infrared Beam Alarm For PWUN
$19.32
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Zigbee Smart Window Door Gate Sensor Contact Detector Smart Life Security Alarm
$14.16
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Garage Door Bracket Compatible with Simpli-Safe Alarm Entry Sensors, Works wi...
$12.36
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1Pack Automatic PIR Occupancy Motion Sensor Light Switch Auto On/Off Infrared
$11.61
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DSC Bravo 3 PIR BV-300 Motion Sensor NOs
$23.00
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1080P Mini Camera WiFi HD IP Camera Camcorder Home Security Cam + 32GB SD Card
$13.99
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Sensores De Movimiento Para Casas Negocios Puerta Ventana Antirobo Con Alarma
$47.49
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Risco Rokonet RK210PT COMET PET Motion detector NOS
$20.00
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Door Single Beam Infrared Beam Alarm Waterproof High Sensitivity Infrared B QIOG
$21.76
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SALE 2pcs PIR Motion Sensor Switch Wall Light Switch Delay Time: 5s~8min (Adjustable)
$12.03$12.66
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Wireless Driveway Alarm Shop Home Security Business Detect Alert IP64 Waterproof
$26.22
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lot of 2 X-10 PowerHouse Eagle Eye Motion Detector MS14A ~ New. 16
$16.95
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ADT SIXGBA Wireless Glass Break Detector Alarm Sensor White Home Security
$49.99
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Solar Powered Driveway Alarm System - 1/4 Mile Range, Weatherproof Motion Sensor
$159.99
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Hosmart 1/2 Mile Driveway Motion Sensor - Easy Install, Multi-Chime Alert System
$98.99
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ANTLUX 4FT LED Flush Mount Puff Lights, 40W 4500LM, 4000K Neutral 40W,
$60.99
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Decora In-Wall Motion Sensor Light Switch, Motion Activated, Auto-On/Auto-Off, 2
$33.06
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Glentronics BWD-HWA Watchdog Water Alarm - White
$13.99
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DSC PG8934P Wireless Security Motion Detector Open Box
$29.95
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LED Flush Mount Ceiling Light Fixture, 5000K Square-White, Daylight White
$34.17
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SALE Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen F
$6.38$6.71
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Automatic Sliding Door Opener Tool Safety Beam Sensor Infrared Anti-Clip Device
$24.21
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SALE Motion Sensor Light Battery Operated, Waterproof Wireless Indoor Outdoor Sec...
$48.44$50.99
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SALE Sunlight Sensitive Photo Electric Switch
$26.39$32.99
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Kalium LED Ceiling Light with Remote 2Pack 12 Inch 12inch, Matte Black
$78.29
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Wireless Infrared Motion Sensor Alarm Alert 3 Sensors Detect Prevent Intruder In
$38.21
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SALE 10.525GHz Microwave Motion Sensor for Raspberry Pi & Arduino
$33.59$55.99
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Bosch ZX935Z Motion Detector POPIT PIR 35ft (11m) Alarm Sensor
$42.00
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DC 5V 12V 24V 3A Highly Sensitive PIR Motion Sensor Light Switch Infrared IR Sen
$6.89
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AC180-240V 50/60Hz Auto On/Off Light Voice Sound Sensor Switch Time Delay B
$3.21
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ONEVER Motion Sensor Outdoor Switch PIR, Light Beam Sensing Switch with Relay...
$12.01
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Water Pipe Leakage Detector, Water Leak Detection Tool, Underground Water Pipe L
$79.15
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