CPVAN 125dB Motion Sensor Alarm w/ Remote Wireless PIR Detector Black
$44.49
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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 AC180-240V 50/60Hz Auto On/Off Light Voice Sound Sensor Switch Time Delay G
$2.86$3.04
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SALE Door Contact Sensor Alarm 120dB Adjustable Volume Door Chime for Home Security
$26.09$28.99
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1pc Driveway Alarm Infrared Motion Sensor Home Garage Alert Security System
$18.32
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Outdoor Solar Alarm With Motion Sensor 129dB 4 Working Modes Dog Barking Sound
$25.99
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SALE HOMSECUR E1 Pet-Immune PIR Detector For ZD01-4G 4G WIFI Alarm System
$51.56$57.29
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1 Set 24.125GHz Human Inductive Motion Microwave Radar Sensor For Automatic Door
$16.97
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Kidde Smart Water Leak and Freeze Detector WiFi Alexa Google 60WLDR-W Lot Of 2
$32.99
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Datacolor Spyder5Express Designed For Hobbyist Photographers S5X100
$159.36
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Motion Sensor Activated Voice Reminder Multi Language Welcome Alarm Doorbel TIQV
$16.24
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eMACROS Pro 3 Smart Solar Driveway Alarm System (2.4G Wi-Fi), App Push Notifi...
$118.88
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SALE Airthings 2950 Wave Radon Smart Detector Humidity Temperature Sensor
$63.99$76.52
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Broan NuTone MS100WR Occupancy Sensor
$15.00
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Lot of 2 Winland WB-200 WaterBug 12V Transmitter Sensor M-001-0137
$29.99
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5PCS HC-SR505 Mini PIR Motion Sensor IR Human Movement Detector Module
$15.99
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1/2 Mile Long Range Wireless Driveway Alarm-HTZSAFE Outdoor/Indoor Motion Sen...
$76.53
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eMACROS Pro 3 Smart Solar Driveway Alarm System (2.4G Wi-Fi), App Push Notifi...
$119.99
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ADT LifeShield Door Window Sensors LFSDWA01 Lot of 4 Wireless Alarm NEW
$41.95
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Honeywell IS-215T IntelliSense PIR Passive Infrared Indoor Motion Sensor NOS
$16.99
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ADT LifeShield Fire Safety Sensor Wireless Alarm Smoke CO Listener NEW
$49.99
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8 Pack Door Stop Alarm 120dB Security Wedge Stoppers for Home Travel Safety Tool
$53.99
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120DB Door Stop Alarm - Security Doorstop Wedge for Home, Travel & Apartment (4-
$50.99
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2 Pack 2X2Feet 4200 LM LED Flat Panel, White Trim Flush Mount and Drop Ceiling L
$234.99
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SALE NEW Bosch DS939 360° Ceiling Mount PIR Motion Detector Alarm Sensor
$58.00$60.00
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Wireless Door Chime Sensor Alarm - 500FT Range, 26 Chimes, 5 Volume Levels, 2 Se
$42.99
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Smart Water Leak Detector 1804ft WiFi Sensor with Alarm & 5-Year Battery - 3 Pac
$79.99
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White PIR Motion Sensor Wall Switch AC100-240V for Downlights & Ceiling Lights
$12.49
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New Low-Cost Water Leak Alarm Flood Level Overflow Detector Sensor Security
$10.52
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Solar Powered Motion Sensor Alarm 129dB 4 Modes 13 Sounds For Warehouse Security
$25.37
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Home WiFi Smart Temperature Humidity Sensor Meter Hygrometer Thermometer Monitor
$20.11
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Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen C
$10.33
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Gold Semi Flush Mount Ceiling Light Fixture,Hallway 9.84in,
$78.29
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SALE OC55 NO+NC Alarm Security Contact Magnetic Reed Switch ROLLING GATE GARAGE DOOR
$19.14$22.52
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240 Degree Motion Sensor, Replacement Motion Detector for Outdoor Lights, Adj...
$21.94
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AC 85-265V Brand New Motion Infrared Sensor Switch For Outdoor 180° Detection
$12.63
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4 Mode Solar Motion Detector Alarm 129dB With 13 Sounds For Barn Orchard Use
$25.64
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Automatic Light Sensor Control Switch DC 8V-50V Photocell Light Switch Replace
$12.72
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Sunco 6 Pack LED Shop Lights for Workshop 1 of 6, 6000K Daylight Deluxe
$103.99
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DC USB Body Infrared PIR Motion Sensor Switch Detector Switch For LED Light
$11.39
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20m Single Beam Alarm Photoelectric Infrared Detector Alarm Home Security NEW
$15.57
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Solar Outdoor Motion Sensor Alarm-129db Loud Siren Lamp Noise Maker, 4 Workin...
$32.95
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Sunco 6 Pack LED Disc Lights Ceiling 6 Inch, Flush 6 4000K Cool White
$55.99
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Driveway Alarm- 1/2 Mile Long Range Wireless Driveway Alarm Outdoor Weather Resi
$78.96
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Bofea-Modern Green Ceiling Light Fixture Vintage Glass Flush Mount
$141.82
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Swann Wi-Fi Water Leak Sensor SWIFI-LEAK Smart Detector Wireless Battery Alarm
$13.50
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Kaniker Modern LED Ceiling Light, 3-Round Rings Flush Mount, 3 Rings, Black
$61.99
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Infrared Motion Sensor Activated Sound Speaker Motion Activated Voice Playe NRZX
$101.41
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ANWIO Crystal Gold Ceiling Light Fixture, Modern Semi Flush JZ 27cm, m
$46.15
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