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Surveillance EquipmentAll CamerasAll Home AssistantsAll PhonesAll Security CamerasApple HomeKit Compatible DevicesArloComputer AccessoriesComputer MonitorsDesktop ComputersGeneral Electronic AccessoriesGoogleGoogle HomeGrades 6-12 ElectronicsLaptop AccessoriesLaptopsNetworkingPC GamingPortable AudioRestored AutomotiveRestored HomeRestored PremiumRestored TechRestored ToolsSamsung SmartThings Compatible DevicesSecurity CamerasSecurity Cameras and Security Camera SystemsShop all Headphones & SpeakersShop by BenefitShop by BrandShop by CompatibilityShop by RoomShop Cameras by TypeSmart Energy and LightingSmart Home Assistants, Controllers & HubsSmart SpeakersSurveillance CamerasWink Compatible DevicesWorks with AlexaWorks with Google Assistant
Detector Sensor(577)
Uses item details. Price when purchased online
Briidea LD-078 110dB, Switch Household Sensors & Alarms $66.49 Was $74.99
Sponsored
Now$6649
current price Now $66.49, Was $74.99$74.99
Briidea LD-078 110dB, Switch Household Sensors & Alarms
24 out of 5 Stars. 2 reviews
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Room Alert 12S Proactive Environment Monitor – Built-in Temperature Sensor, Supports SSL/TLS, SNMP v3, App Alerts, Made in USA $779.00
Sponsored
$77900
current price $779.00Room Alert 12S Proactive Environment Monitor – Built-in Temperature Sensor, Supports SSL/TLS, SNMP v3, App Alerts, Made in USA
Driveway Alarm 656ft Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor-DIY Security Alert-Monitor with 38 Chimes for Indoor Outdoor Use $25.99 Was $39.39
Sponsored
Now$2599
current price Now $25.99, Was $39.39$39.39
Driveway Alarm 656ft Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor-DIY Security Alert-Monitor with 38 Chimes for Indoor Outdoor Use
893.8 out of 5 Stars. 89 reviews
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Best seller 1/2 Mile Long Range Solar Wireless Driveway Alarm System IP65 Weatherproof Outdoor Motion Detectors&Sensor 120dB Siren Sound Light Security Alert System Monitor&Protect Outdoor/Indoor Property(1R2S) From $29.99
Sponsored
From$2999
1/2 Mile Long Range Solar Wireless Driveway Alarm System IP65 Weatherproof Outdoor Motion Detectors&Sensor 120dB Siren Sound Light Security Alert System Monitor&Protect Outdoor/Indoor Property(1R2S)
714.5 out of 5 Stars. 71 reviews
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Best seller Fixdono Natural Gas Detector, Digital Sound Warning Gas Detector, Natural Gas Leak Security Detection Detector, Alarm Monitor Plug-in Sensor for Home Kitchen Restaurant Hotel School Warehouse $17.99 Was $27.99
Now$1799
current price Now $17.99, Was $27.99$27.99
Fixdono Natural Gas Detector, Digital Sound Warning Gas Detector, Natural Gas Leak Security Detection Detector, Alarm Monitor Plug-in Sensor for Home Kitchen Restaurant Hotel School Warehouse
2434.3 out of 5 Stars. 243 reviews
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Driveway Alarm Wireless Outside Motion Sensor Alarm with Receiver Weatherproof Infrared Sensor, Indoor Home Security Business Alert System Detector(1Pcs)
Driveway Alarm Wireless Outside Motion Sensor Alarm with Receiver Weatherproof Infrared Sensor, Indoor Home Security Business Alert System Detector(1Pcs)
Wsdcam Window Alarm Sensors 125dB Ultra-Slim Wireless Glass Break Detector Vibration Alarm 8 Pack $52.99
$5299
current price $52.99Wsdcam Window Alarm Sensors 125dB Ultra-Slim Wireless Glass Break Detector Vibration Alarm 8 Pack
144.1 out of 5 Stars. 14 reviews
Leak Alert Electronic Water Detector Flood Sensor Alarm From $14.99
From$1499
Leak Alert Electronic Water Detector Flood Sensor Alarm
94.8 out of 5 Stars. 9 reviews
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WIFI Wireless Smart Magnetic Door Window Sensor Detector Alarm For Google Home $11.95
$1195
current price $11.95WIFI Wireless Smart Magnetic Door Window Sensor Detector Alarm For Google Home
33.7 out of 5 Stars. 3 reviews
XaTanion Motion Sensor 1Pc Single Beam Infrared Detector Alarm Barrier Sensor Photo electric Home,Black,2.8*0.92 Inch
XaTanion Motion Sensor 1Pc Single Beam Infrared Detector Alarm Barrier Sensor Photo electric Home,Black,2.8*0.92 Inch
Hosmart HY001-1R+1S, 30ft Rechargeable Household Sensor & Alarm $42.99
Sponsored
$4299
current price $42.99Hosmart HY001-1R+1S, 30ft Rechargeable Household Sensor & Alarm
74.3 out of 5 Stars. 7 reviews
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SimpliSafe 4 Pack Entry Sensor ES3 Door Window Protection Magnetic Home Security System $42.35
Sponsored
$4235
current price $42.35SimpliSafe 4 Pack Entry Sensor ES3 Door Window Protection Magnetic Home Security System
DSC PG9922 Wireless PowerG Glass Break Detector Sensor $129.50
$12950
current price $129.50DSC PG9922 Wireless PowerG Glass Break Detector Sensor
Best seller Driveway Alarm Wireless, Outdoor Motion Sensor Alarm with Motion Detector, Weatherproof Solar Driveway Alarm, 700 ft Range, 1 Receiver and 1 Sensor, Home Security System, Black $26.99 Was $29.99
Now$2699
current price Now $26.99, Was $29.99$29.99
Driveway Alarm Wireless, Outdoor Motion Sensor Alarm with Motion Detector, Weatherproof Solar Driveway Alarm, 700 ft Range, 1 Receiver and 1 Sensor, Home Security System, Black
854.2 out of 5 Stars. 85 reviews
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Rirool Natural Gas Detector with Digital Display, 85dB Alarm, Plug-in Gas Leak Sensor for Home, Kitchen, Restaurant, Hotel, School, Warehouse Safety Monitor $17.99
$1799
current price $17.99Rirool Natural Gas Detector with Digital Display, 85dB Alarm, Plug-in Gas Leak Sensor for Home, Kitchen, Restaurant, Hotel, School, Warehouse Safety Monitor
214.7 out of 5 Stars. 21 reviews
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Fosmon WaveLink Wireless Motion Sensor Alarm, 500FT Battery Operated Motion Detector Alarm With Plug In Receiver, Weather Resistant Driveway Alarm, Indoor Outdoor Door Chime For Business, Store, Home $21.99
$2199
current price $21.99Fosmon WaveLink Wireless Motion Sensor Alarm, 500FT Battery Operated Motion Detector Alarm With Plug In Receiver, Weather Resistant Driveway Alarm, Indoor Outdoor Door Chime For Business, Store, Home
353.9 out of 5 Stars. 35 reviews
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Driveway Alarm- 1/2 Mile Long Range Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor&Detector-DIY Security Alert-Monitor&Protect Outdoor/Indoor Property - 1 Receiver and 2 Sensors $52.98
$5298
current price $52.98Driveway Alarm- 1/2 Mile Long Range Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor&Detector-DIY Security Alert-Monitor&Protect Outdoor/Indoor Property - 1 Receiver and 2 Sensors
344.2 out of 5 Stars. 34 reviews
MOBI Smart Home 2.4GHz WiFi Water Leak Sensor, Water Sensor, Water Detector Alarm; Water Leak & Flood Detector, Smart Notification App, Expand with Cameras & Smart Home Devices. Battery INCLUDED From $14.95
3 options
Available in additional 3 optionsFrom$1495
MOBI Smart Home 2.4GHz WiFi Water Leak Sensor, Water Sensor, Water Detector Alarm; Water Leak & Flood Detector, Smart Notification App, Expand with Cameras & Smart Home Devices. Battery INCLUDED
94.9 out of 5 Stars. 9 reviews
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Upgraded Smart WiFi Motion Sensor Detector Alarm Indoor with Siren, Phone App, USB Power, Alert Recording, Scheduled Working Times - Infrared Motion Sensor Alarm for Home Garage $22.88
$2288
current price $22.88Upgraded Smart WiFi Motion Sensor Detector Alarm Indoor with Siren, Phone App, USB Power, Alert Recording, Scheduled Working Times - Infrared Motion Sensor Alarm for Home Garage
Ludlz Infrared Beam Detector, 10m IR Beam Sensor Home Outdoor Security Alarm Human Body Detector Perimeter Protection Was $13.98
Ludlz Infrared Beam Detector, 10m IR Beam Sensor Home Outdoor Security Alarm Human Body Detector Perimeter Protection
YoLink LoRa Smart Outdoor Motion Detector Sensor, Driveway Alert, Property Invasion/Tresspassing Detector, 1/4 Mile Open Air Range, Email/SMS/Push Alerts, Alexa, IFTTT, Home Assistant (Hub Required) From $35.59
Sponsored
From$3559
YoLink LoRa Smart Outdoor Motion Detector Sensor, Driveway Alert, Property Invasion/Tresspassing Detector, 1/4 Mile Open Air Range, Email/SMS/Push Alerts, Alexa, IFTTT, Home Assistant (Hub Required)
114.8 out of 5 Stars. 11 reviews
YoLink LoRa Smart Door Sensor Starter Kit: - 1/4 Mile Open-Air Range, Door Left-Open Reminders,5 Years Battery Life, SMS/Text, Email & App Alerts, Alexa, IFTTT, Home Assistant From $16.95
Sponsored
From$1695
YoLink LoRa Smart Door Sensor Starter Kit: - 1/4 Mile Open-Air Range, Door Left-Open Reminders,5 Years Battery Life, SMS/Text, Email & App Alerts, Alexa, IFTTT, Home Assistant
304.6 out of 5 Stars. 30 reviews
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3pcs Enhanced Wireless PIR Motion Sensor Alarm Detector 433MHz $18.87
$1887
current price $18.873pcs Enhanced Wireless PIR Motion Sensor Alarm Detector 433MHz
Wifi Natural Gas Sensor Tuya Smart Alarm Gas Leakage Detector Fire Security Digital LCD Temperature Display $21.78
$2178
current price $21.78Wifi Natural Gas Sensor Tuya Smart Alarm Gas Leakage Detector Fire Security Digital LCD Temperature Display
HIBIBUD 110V Automatic Body Sensor IR Infrared Sensors Switch Motion Detector Wall Mount Outdoor Light $11.46
$1146
current price $11.46HIBIBUD 110V Automatic Body Sensor IR Infrared Sensors Switch Motion Detector Wall Mount Outdoor Light
Driveway Alarm 1/2 Mile Long Range Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor&Detector-DIY Security Alert System-Monitor&Protect Outdoor/Indoor Property, 1 Receiver and 1 Sensor $37.99
$3799
current price $37.99Driveway Alarm 1/2 Mile Long Range Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor&Detector-DIY Security Alert System-Monitor&Protect Outdoor/Indoor Property, 1 Receiver and 1 Sensor
154.5 out of 5 Stars. 15 reviews
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Swann Swann Water Leak Alarm Sensor, Home Water Detector, Wireless Wi-Fi Connection, No Hub Required, Smartphone Alerts, Early Flood Detection From $14.95
8 options
Available in additional 8 optionsFrom$1495
Swann Swann Water Leak Alarm Sensor, Home Water Detector, Wireless Wi-Fi Connection, No Hub Required, Smartphone Alerts, Early Flood Detection
1174.1 out of 5 Stars. 117 reviews
Topvico Water Leak Alarm for Basements, Heater Leak Detector, Sump Pump Overflow Sensor, 120dB Battery-Operated Flood Alarm, 1-Pack From $8.95
5 options
Available in additional 5 optionsFrom$895
Topvico Water Leak Alarm for Basements, Heater Leak Detector, Sump Pump Overflow Sensor, 120dB Battery-Operated Flood Alarm, 1-Pack
364.6 out of 5 Stars. 36 reviews
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Best seller 1/2 Mile Long Range Solar Wireless Driveway Alarm System IP65 Weatherproof Outdoor Motion Detectors&Sensor 120dB Siren Sound Light Security Alert System Monitor&Protect Outdoor/Indoor Property From $29.99
8 options
Available in additional 8 optionsFrom$2999
1/2 Mile Long Range Solar Wireless Driveway Alarm System IP65 Weatherproof Outdoor Motion Detectors&Sensor 120dB Siren Sound Light Security Alert System Monitor&Protect Outdoor/Indoor Property
714.5 out of 5 Stars. 71 reviews
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Clearance Rongsi Driveway Alarm,Wireless Home Security Driveway Alarm 1 Receiver and 1 PIR Motion Sensor Detector 1000 FT Range Extra Infrared Alarm System Kit $18.99 Was $23.99
Now$1899
current price Now $18.99, Was $23.99$23.99
Rongsi Driveway Alarm,Wireless Home Security Driveway Alarm 1 Receiver and 1 PIR Motion Sensor Detector 1000 FT Range Extra Infrared Alarm System Kit
464.2 out of 5 Stars. 46 reviews
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Best seller GasKnight 2.0 Natural Gas Detector, Propane Detector, Natural Gas Leak Detection. Plug-In Gas Leak Alarm W LCD Display $34.99
Sponsored
$3499
current price $34.99GasKnight 2.0 Natural Gas Detector, Propane Detector, Natural Gas Leak Detection. Plug-In Gas Leak Alarm W LCD Display
633.9 out of 5 Stars. 63 reviews
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Best seller Driveway Alarm Wireless, Outdoor Motion Sensor Alarm with Motion Detector, Weatherproof Solar Driveway Alarm, 700 ft Range, 1 Receiver and 1 Sensor, Home Security System, Black $26.99 Was $29.99
Sponsored
Now$2699
current price Now $26.99, Was $29.99$29.99
Driveway Alarm Wireless, Outdoor Motion Sensor Alarm with Motion Detector, Weatherproof Solar Driveway Alarm, 700 ft Range, 1 Receiver and 1 Sensor, Home Security System, Black
854.2 out of 5 Stars. 85 reviews
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Reduced price Zerodis Wired Glass Break Detector Round Door Window Break-in Sensor Tamper Alarm System $10.00 Was $11.99
Now$1000
current price Now $10.00, Was $11.99$11.99
Zerodis Wired Glass Break Detector Round Door Window Break-in Sensor Tamper Alarm System
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Wifi Natural Gas Sensor Tuya Smart Alarm Gas Leakage Detector Fire Security Digital LCD Temperature Display $21.66
$2166
current price $21.66Wifi Natural Gas Sensor Tuya Smart Alarm Gas Leakage Detector Fire Security Digital LCD Temperature Display
15 out of 5 Stars. 1 reviews
Amerteer Smart WiFi Infrared Detectors Motion Sensor Alarm $15.57
$1557
current price $15.57Amerteer Smart WiFi Infrared Detectors Motion Sensor Alarm
15 out of 5 Stars. 1 reviews
Luxtrada 120dB Water Leak Alarm Detector Sensor Water Leakage Sound Alarm Flood Wired Sensor Siren for Home Security, Basement, Floor, Work Alone Home Security Low Battery Alert $9.99
$999
current price $9.99Luxtrada 120dB Water Leak Alarm Detector Sensor Water Leakage Sound Alarm Flood Wired Sensor Siren for Home Security, Basement, Floor, Work Alone Home Security Low Battery Alert
Tuya Smart Water Sensor Water Leak Detector Alarm APP Remote Control Water Leak Sensor Water Tank Full Alarm $11.22
$1122
current price $11.22Tuya Smart Water Sensor Water Leak Detector Alarm APP Remote Control Water Leak Sensor Water Tank Full Alarm
YoLink LoRa Smart Outdoor Motion Sensor, Driveway Alert, Property Invasion/Tresspassing Detector, 1/4 Mile Open Air Range, Email/SMS/Push Alerts, Alexa, IFTTT, Home Assistant (Hub Included!) From $35.59
From$3559
YoLink LoRa Smart Outdoor Motion Sensor, Driveway Alert, Property Invasion/Tresspassing Detector, 1/4 Mile Open Air Range, Email/SMS/Push Alerts, Alexa, IFTTT, Home Assistant (Hub Included!)
114.8 out of 5 Stars. 11 reviews
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1x Wireless Motion Sensor, 433MHz Wireless Infrared PIR Motion Detector for Home Security Alarm System $12.15
$1215
current price $12.151x Wireless Motion Sensor, 433MHz Wireless Infrared PIR Motion Detector for Home Security Alarm System
Wsdcam Window Alarm Ultra-Slim Glass Break Sensor 125dB Home Security Alarm System-4 Pack From $25.99
From$2599
Wsdcam Window Alarm Ultra-Slim Glass Break Sensor 125dB Home Security Alarm System-4 Pack
454.3 out of 5 Stars. 45 reviews
WiFi Water Leak Detector No Hub Required, Easy Installation Smart Sensor for Home, Basement, Kitchen, Bathroom Moisture Sensor, Wireless, IP55 80dB Alarm Flood Sensors$$Electronics Accessories $49.98
$4998
current price $49.98WiFi Water Leak Detector No Hub Required, Easy Installation Smart Sensor for Home, Basement, Kitchen, Bathroom Moisture Sensor, Wireless, IP55 80dB Alarm Flood Sensors$$Electronics Accessories
Honeywell 5800PIR-OD2 PIR Wireless Outdoor Motion Detector Sensor $373.23
$37323
current price $373.23Honeywell 5800PIR-OD2 PIR Wireless Outdoor Motion Detector Sensor
WiFi Smart Motion Sensor Alarm Indoor Infrared PIR Detector Siren Tuya Smart APP Control Wireless Trigger Player Home Security
WiFi Smart Motion Sensor Alarm Indoor Infrared PIR Detector Siren Tuya Smart APP Control Wireless Trigger Player Home Security
24.5 out of 5 Stars. 2 reviews
TOP! AC110-240V Motion Sensor Automatic Infrared Light Movement Detector Outdoor Switch Human Presence A $9.35
$935
current price $9.35TOP! AC110-240V Motion Sensor Automatic Infrared Light Movement Detector Outdoor Switch Human Presence A
25 out of 5 Stars. 2 reviews
WiFi Motion Detector, Kadlawus Tuya WiFi PIR Human Infrared Sensor, Smart Home Assistant for Phone Remote Control, 360° Ceiling Installation Motion Detector with App Alerts, No Hub Required
WiFi Motion Detector, Kadlawus Tuya WiFi PIR Human Infrared Sensor, Smart Home Assistant for Phone Remote Control, 360° Ceiling Installation Motion Detector with App Alerts, No Hub Required
Tuya Zigbee 3.0 Smart Contact Detectors Security Gate Door Window Sensor Transducer Smart Life Home(4PCS),4 x Smart Contact Detectors,White $21.09
$2109
current price $21.09Tuya Zigbee 3.0 Smart Contact Detectors Security Gate Door Window Sensor Transducer Smart Life Home(4PCS),4 x Smart Contact Detectors,White
ZigBee Smart Temperature Humidity Light Sensor APP Remote Monitor Intelligent Detector Smart Security Sensor,1 x light temperature and humidity sensor detector,White $22.59
$2259
current price $22.59ZigBee Smart Temperature Humidity Light Sensor APP Remote Monitor Intelligent Detector Smart Security Sensor,1 x light temperature and humidity sensor detector,White
Spencer 120dB Water Leakage Leakage Detection Detector Sound Alarm Wired Sensor Siren Low Battery Flood Alert for Home Security, Basement, Floor $8.59
$859
current price $8.59Spencer 120dB Water Leakage Leakage Detection Detector Sound Alarm Wired Sensor Siren Low Battery Flood Alert for Home Security, Basement, Floor
15 out of 5 Stars. 1 reviews
Deago Water Leak Sensor Detector Flood Alarm Battery Operated Leak Alert Water Detector for Kitchen Bathroom Basement
2 options
Available in additional 2 optionsDeago Water Leak Sensor Detector Flood Alarm Battery Operated Leak Alert Water Detector for Kitchen Bathroom Basement
DLQT 85 To 265v White Human Body Sensor Floodlight Sensor Pir Sensor Probe Sensor Infrared Sensor Switch Human Body Infrared 1 From $9.70
From$970
DLQT 85 To 265v White Human Body Sensor Floodlight Sensor Pir Sensor Probe Sensor Infrared Sensor Switch Human Body Infrared 1
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