SALE AC180-240V 50/60Hz Auto On/Off Light Voice Sound Sensor Switch Time Delay G
$2.94$3.13
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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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SALE 
NICOR Lighting RSD Series 6 in. Surface Mount LED Downlight, 5000K White
$12.02
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Home Security Single Beam Alarm Photoelectric 20M Infrared Laser Sensor Detector
$11.31
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AC 85-265V Portable Motion Infrared Sensor Switch For Outdoor 180° Detection
$13.28
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SALE 15s Sensor Switch Infrared Human Body Sensing Switch cabinet Sensing
$6.50$6.91
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SALE Automatic Infrared PIR Motion Sensor Body Induction Switch Control Accessories
$10.04$10.69
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SALE High Sensitivity 24.125GHz Human Inductive Motion Microwave Radar Sensor
$16.28$17.32
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SALE 1pc Automatic PIR Occupancy Motion Sensor Light Switch Auto On/Off Infrared
$10.74$11.43
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AC110V-220V PIR Infrared Body Motion Sensor Detector Control Light Auto Switch
$5.62
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1000W Power Inverter, 12V DC to 120V AC Modified Sine Wave Inverter, Car Charger
$117.10
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5 Pack Surface Mounted NC Magnetic Door Contacts Switch Sensor for Alarm
$12.40
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AC301 Wind Light Rain Sensor Smart Electronic for Motorized Shades Motor (1B-6
$55.00
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SALE PIR motion sensor module (Qty 37)
$15.99$19.99
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Heath Zenith 180 Degree Motion Security Light 250 WATT SL-5412-A
$40.00
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6 Pack Solar Driveway Alarm Motion Sensor 129db Red
$141.09
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ONE KEYENCE IV-G500CA Vision Sensor New
$477.96
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1PCS KEYENCE IV-G500CA Vision Sensor New
$477.93
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NEW Simplisafe MOTION SENSOR White CA001 (Latest Model)
$19.89
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Wyze Home Monitoring Bundle Wireless Indoor System w/ Keypad, Alexa/GA
$49.50
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GoveeLife Upgraded Smart Water Leak Detector 1s with 1804 ft Ultra-Long Range, W
$30.00
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SALE Honeywell IS3050A-SN PIR Motion Detector White 35ft New Open Box
$37.49$49.99
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2 Plug & Safe Motion Sensor Detector Wireless Home Theft Security System PS8
$20.00
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Honeywell Home 5816 2-Zone Door/Window Transmitter, White New E45
$23.98
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1PCS KEYENCE IV-G500CA Vision Sensor New
$477.95
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Microwave Radar Human Motion Detector Sensor Module for Supermarkets Atms
$20.99
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20M One Beam Infrared Sensor Detector Alarm Photoelectric Infrared Laser Sensor
$16.39
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Eco-Friendly Solar Motion Alarm with Remote Control - 26ft Range Security System
$59.89
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Waterproof Solar Power Alarm LED Light Warning Lamp With Remote Control
$13.24
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ABS 24.125GHz Human Inductive Motion Microwave Radar Sensor For Automatic Door
$16.97
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Home WiFi Smart Temperature Humidity Sensor Meter Hygrometer Thermometer Monitor
$18.32
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10 x RC-33 NC Recessed Door Contact Sensor Alarm Magnet Reed Switch
$9.29
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AC 85-265V Durable Motion Infrared Sensor Switch For Outdoor 180° Detection
$11.40
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Automatic Infrared PIR Motion Sensor Switch Auto On/Off Lamp Control Replacement
$10.45
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Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen C
$6.51
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AC220V 200W Human Body IR Infrared Sensor Switch LED Light Automatic Control
$6.71
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WiFi Water Leak Detector, Smart Water Sensor with 100dB Adjustable Alarm&App ...
$63.02
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180-240V 50/60Hz Auto On/Off Light Voice Sound Sensor Switch Time Delay Function
$3.05
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Zigbee PIR Motion Sensor 120° Wireless Passive Infrared Detector Home Security
$20.36
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30cm 5V-24V PIR Infrared Ray Motion Sensor Switch USB/DC LED Detector Switching
$8.22
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White PIR Motion Sensor Wall Switch AC100-240V for Downlights & Ceiling Lights
$8.55
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Small Water Leak Alarm 6-Pack | Ready to Use, No Setup Required
$61.89
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5V-24V Sensor Switch Infrared Human Body Sensing Switch cabinet Sensing
$6.85
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New Low-Cost Water Leak Alarm Flood Level Overflow Detector Sensor Security
$6.10
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Radiant 600W Occupancy Motion Sensor Light Switch, 180 Degree Coverage, Auto ...
$28.85
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Motion Sensor Light Switch, Motion Activated, Auto-On/Auto-Off or Manual-On, ...
$31.00
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LoRa Smart Water Level Monitoring Sensor, Wireless Battery-Powered Float Swit...
$36.94
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DC4V-12V PIR Infrared Motion Sensor Detector Light Lamp Switch Auto Accessories
$5.02
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Body Infrared PIR Motion Sensor Switch For LED Light Strip Automatic DC 12V B
$8.14
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