SALE Auto ON OFF Detector Infrared PIR Motion Sensor Switch For Led Light Strip
$10.76$12.09
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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 
SALE 4 Modes Outdoor Solar Alarm 129dB Motion Sensor With Dog Barking Gunshot Sounds
$24.11$27.09
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Water Leak Detector, 120dB Water Sensor Alarm, Water Leakage Detection Device...
$16.56
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SALE New Effective Device Water Leak Alarm Flood Level Overflow Detector Security
$10.05$11.29
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SALE 20m Single Beam Alarm Photoelectric Infrared Detector Alarm Home Security A
$14.28$16.23
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SALE 4 Mode Solar Alarm With Motion Sensor 129dB Red Blue Lights For Garden Security
$23.51$26.72
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Solar Powered Motion Sensor Alarm 129dB 4 Modes 13 Sounds For Warehouse Security
$25.10
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SALE Smart WiFi Door and Window Sensor – Wireless Magnetic Contact Sensor with Rea...
$27.54$28.99
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SALE 2 Pack Water Leak Detectors, 100dB Water Sensor Alarms Flood Detector for Bas...
$27.54$28.99
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SALE LOT NASCOM SECURITY SENSORS CONTACTS MAGNETS 3/8' 3/4" BROWN WHITE RECESSED
$35.99$59.99
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SALE WiFi Water Leak Detectors, Leak & Drip Alert with APP Push and Sound Alarm, S...
$25.64$26.99
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SALE Solar Motion Sensor Alarm emits loud dog barking & gunshot sounds up to 130db
$35.09$38.99
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5-PACK Smart Water Leak Sensor Detector APP Alarm WiFi Home Water Leak Detector
$40.00
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Mini PIR Motion Sensor Switch, USB 5V DC12-24V, LED Strip Auto Light
$20.00
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Human Body Motion Sensor Control Works with Home F2J19171
$14.99
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SALE Water Leak Detector Underground Water Pipe Leakage Monitor Digital Disp. F999
$237.77$264.19
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5 Pcs -38 Wired Door Window Sensor Magnetic For Home Alarm System,When5982
$13.99
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Outdoor Solar Sound Light Alarm 6LEDs 111db Security Siren
$27.99
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4-Pack Wireless Door & Window Alarms - DIY Home Security, Easy Install, Burglar
$46.99
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SALE Tuya Smart WiFi Smoke Sensor Fire Protection 85dB Sound Security System Control
$23.32$25.91
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STI Rex Plus Barking Dog Alarm/Nature Sounds Model ED-50
$79.95
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110V/220-240V Intelligent Over Temperature Alarm Sensor Machine New 105dB 0‑400℃
$112.60
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Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen B
$6.51
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New 10 x RC-33 NC Wired Door Contact Sensor Alarm Magnet Reed Switch
$9.48
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New AC180-240V 50/60Hz Auto On/Off Light Voice Sound Sensor Switch Time Delay
$3.05
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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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Auto On/Off Sensor Switch Motion Infrared PIR Occupancy Wall Light Lamp
$11.31
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Safe trust Lot Sensor Wall Mount Model SA520 Brand New
$69.99
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Solar Alarm Motion Sensor 129dB - Solar Sound Light Outdoor Dog Barking Security
$31.77
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Bunker Hill Security 4-Channel Surveillance DVR Model 68332
$44.99
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4PACK Flush Mount Ceiling Light Fixture Wired, 8.7inch Wired 4pack, White
$85.35
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Solar Motion Sensor Alarm 130DB Strobe Light Outdoor Security System
$32.39
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Vivint Wireless Smart Home Glass Break Sensor V-GB2-345
$29.67
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Ismart Gate Wireless Tilt Sensor
$35.00
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Aleph XP-40 Standard Passive Infrared Motion Sensor
$22.95
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Aqara Motion Sensor Zigbee Smart Home Wireless Human Body Detection
$38.12
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ROOST RIR-320 MOTION SENSOR WIRELESS PIR DETECT SECURITY360 HOME SECURITY SYSTEM
$25.10
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Ubiquiti Camera G5 Bullet UVC-G5-BULLET - NEW SEALED
$207.99
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Driveway Alarm Home Security Alert System Weatherproof PIR Motion Detector Loud
$26.99
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SimpliSafe Panic Button (PB1000) 1st Generation, Wireless Security System
$7.95
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SALE 3 x Wired Door Contact Sensor NO NC Surface Mount Magnetic Reed Switch Black
$20.96$22.06
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Honeywell Home ProSeries door/window sensor PROSIXCT
$15.00
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Outdoor PIR DC 12V Automatic Infrared PIR Motion Sensor Switch for LED Flood Lig
$13.99
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SALE SimpliSafe Home Security System Panic Sensor Button (PB3)(SSPB3) NEW
$16.96$19.95
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GE Window/Door Audible Alarm 120 dB Indoor Battery Operated White 2 Pack 45115
$12.40
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2GIG GB100-345 Glass Break Detector, 345S
$55.00
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SALE GE Interlogix TX-1012-01-1 Micro Wireless Sensor Battery Magnet 2 Pack Sealed
$37.49$49.99
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TALOS SFD-1000-P Standard Lightning Detector, 25-Mile Range, Waterproof
$173.10
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