120/277-Volt Single Pole Occupancy Sensor Wall Switch PIR Passive Infrared, Whit
$36.13
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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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Sonoff motion sensor PIR2 - Movement sensors
$10.00
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SALE Swann Leak Alert Sensor - White - Detect Leaks Mobile Alert Brand New ShipsFree
$15.52$17.99
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SALE Zigbee Motion Sensor Hub Required - Echo Devices Compatible
$125.24$166.99
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SALE Water Detector IP65 Waterproof Leakage Detector Alarm Leak Detector for Basement
$14.71$15.48
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Origianl Japan KOFU OKI Reed Switch 6pcs Reed Switch Reed Contact Normally Op...
$9.58
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Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen A
$10.11
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3-5m Automatic Body Infrared PIR Motion Sensor Detector Switch For LED light A
$10.11
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1Pc USB Port Detector Infrared PIR Motion Sensor Switch For Led Light Strip
$10.91
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B-Hyve Smart Flood Sensor 3-Pack with Wi-Fi Hub
$118.34
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20m Single Beam Alarm Photoelectric Infrared Detector Alarm Home Security A
$14.91
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YoLink's YS7903-UC Water Leak Kit: Hub + 4x Leak Sensor NEW
$59.99
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NEW Solar Motion Sensor Alarm With Strobe Light For Yard Security
$21.54
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SimpliSafe Motion Sensor Gen 2 - Compatible with Gen 3 Base ~ New Open Box
$20.00
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LM393 Sound Sensor Module High Sensitivity Microphone Detection 5 Pack Arduino
$16.85
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SimpliSafe ES3 (SSES3) door/window wireless Entry Sensor - Tested And Working
$7.99
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4X GE Audible Window/Door ALARM - Battery Operated 2 Pcs (8 Total)
$25.00
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Automatic Light Sensor Control Switch DC8-50V Photocell Light Switch Replacement
$12.18
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Kidde Smart Water Leak and Freeze Detector WiFi Alexa Google 60WLDR-W Lot Of 2
$29.99
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Solar Motion Sensor Alarm, 3pc Siren System fits Home Farm & Warehouse Security
$152.52
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Maestro Motion Sensor Switch MS-OPS2-WH White Occupancy Vacancy Energy Saving
$66.33
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Automatic Water Leak Detector with Sensors and Shut-off Valve
$78.60
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Cooper lighting Motion Activated Sensor Single Lite Adapter MSRU180W NIP
$34.95
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SALE 30cm 5V-24V PIR Infrared Ray Motion Sensor Switch USB/DC LED Detector Switching
$10.56$11.87
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SALE New 315mhz Infrared Motion Sensor Home Garage Alert Security System
$18.14$20.38
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WiFi Water Leak Detector 100dB Alarm Smart Life Tuya Sensor 65mm/2.6in White
$31.50
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SALE Microwave Radar Human Motion Detector Sensor Module for Supermarkets Atms
$18.23$21.20
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SALE 20M One Beam Infrared Sensor Detector Alarm Photoelectric Infrared Laser Sensor
$14.23$16.55
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SALE Wireless RF Door Entry with Receiver Lighting Control By Defiant with Batteries
$11.16$15.95
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SALE Solar Power Motion Sensor Loud Sound Light Alarm Dog Barking Gunshots Repeller
$31.63$51.63
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SALE New 45° Infrared Motion Sensor Home Garage Alert Security System
$18.12$20.59
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SALE New Automatic Light Sensor Control Switch DC8-50V Photocell Light Switch Parts
$11.80$13.26
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SALE Guardline Extra Receiver Wireless Driveway Alarm 500 Ft 915MHz New
$49.99$64.97
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SALE Automatic Light Sensor Control Switch DC 8V-50V Photocell Light Switch Repair
$11.63$13.52
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TOPGREENER Motion Sensor Switch Black 1 Pack
$44.99
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Automatic Water Leak Detector with Sensors and Shut-off Valve
$78.59
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SALE Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen G
$9.55$11.10
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Wireless Radar Motion Detector Sensor – Add-On Accessory Only, No Receiver – 1/2
$195.17
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SALE Driveway Alarm- 1/2 Mile Long Range Wireless Driveway Alarm Outdoor Weather R...
$56.50$59.47
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NEW Steinel Dual HF COM1 Presence Motion Detector Sensor Ceiling 002978
$99.00
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SALE 5-24V USB Port Detector Infrared PIR Motion Sensor Switch For Led Light Strip ss
$10.41$12.11
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Outdoor Solar Wireless Motion Sensor Alarm 4 Modes Flashing 130db Loud Noise
$19.98
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SALE New Effective Device Water Leak Alarm Flood Level Overflow Detector Security
$9.85$11.19
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SALE 3-5m Automatic Body Infrared PIR Motion Sensor Detector Switch For LED light G
$9.55$11.10
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SALE Eve Motion Wireless Motion Sensor SEALED Apple Home Privacy Home Security C
$55.99$79.99
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Solar Outdoor Motion Sensor Alarm 2*130db Ultrasonic Siren with 4 Modes Flashing
$19.98
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SALE New 10ft-23ft Infrared Motion Sensor Home Garage Alert Security System
$17.89$20.80
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SALE AC 85-265V Maintenance Motion Infrared Sensor Switch For Outdoor 180° Detection
$11.54$13.42
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