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Surveillance EquipmentAll CamerasAll Home AssistantsAll PhonesAll Resold at WalmartAll Security CamerasApple HomeKit Compatible DevicesArloCell Phone AccessoriesComputer AccessoriesComputer MonitorsDesktop ComputersGoogleGoogle HomeGrades 6-12 ElectronicsHeadphonesHome Audio, Speakers & SoundbarsiPad & TabletsLaptop AccessoriesLaptopsNetworkingPC GamingPortable AudioRestored AutomotiveRestored HomeRestored PremiumRestored TechRestored ToolsSecurity 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 CamerasTablet AccessoriesTV AccessoriesWorks with AlexaWorks with Google Assistant
Sensor Security(445)
Uses item details. Price when purchased online
(2 pack) Universal Security Instruments, Sensing Plus, Hardwired Smoke & Fire Alarm, Multi-Criteria Detection, with 10 Year Battery Backup $69.88 $34.94/ea
Sponsored
$6988
current price $69.88$34.94/ea
From $34.94
(2 pack) Universal Security Instruments, Sensing Plus, Hardwired Smoke & Fire Alarm, Multi-Criteria Detection, with 10 Year Battery Backup
1284.2 out of 5 Stars. 128 reviews
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Briidea Power Failure Outage Alarm for Freezer, with LED Indicator Lights and 80-120dB Adjustable Alarm, Perfect for Monitoring Refrigerators, Freezers, and Sewage From $19.99
Sponsored
From$1999
Briidea Power Failure Outage Alarm for Freezer, with LED Indicator Lights and 80-120dB Adjustable Alarm, Perfect for Monitoring Refrigerators, Freezers, and Sewage
164.8 out of 5 Stars. 16 reviews
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YoLink Smart Power Fail Alarm & Hub Kit, Smart Home Starter Kit with AC Power Outage Alert, LoRa Long-Range, Remote Monitoring, App Alerts, Text/SMS, Email Alerts, Alexa, IFTTT, Google Assistant From $34.99
Sponsored
From$3499
YoLink Smart Power Fail Alarm & Hub Kit, Smart Home Starter Kit with AC Power Outage Alert, LoRa Long-Range, Remote Monitoring, App Alerts, Text/SMS, Email Alerts, Alexa, IFTTT, Google Assistant
124.8 out of 5 Stars. 12 reviews
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Briidea Power Outage Alarm with LED Indicator Lights and 80-120dB Adjustable Alarm, Perfect for Monitoring Refrigerators, Freezers, and Sewage, 2 pack $39.99
Sponsored
$3999
current price $39.99Briidea Power Outage Alarm with LED Indicator Lights and 80-120dB Adjustable Alarm, Perfect for Monitoring Refrigerators, Freezers, and Sewage, 2 pack
Best seller Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (8 Pcs) Home Alarm(Batteries not included) From $10.99
2 options
Available in additional 2 optionsFrom$1099
Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (8 Pcs) Home Alarm(Batteries not included)
2323.8 out of 5 Stars. 232 reviews
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Arlo All-in-One Sensor with 8 sensing functions for Home Security System MS1001-100NAS $10.50 Was $29.99
Now$1050
current price Now $10.50, Was $29.99$29.99
Arlo All-in-One Sensor with 8 sensing functions for Home Security System MS1001-100NAS
54.2 out of 5 Stars. 5 reviews
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Best seller Bitiwend Door Alarm Sensor Bitiwend Wireless Door Chime Alert for Kids Safety Home (1 Receiver+3 Sensors)
Bitiwend Door Alarm Sensor Bitiwend Wireless Door Chime Alert for Kids Safety Home (1 Receiver+3 Sensors)
1354.1 out of 5 Stars. 135 reviews
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Window Alarm, 10-Pack Wireless Window Door Entry Alarm Burglar Security Alarm Magnetic Sensor Ideal for Home, Garage, Apartment, Dorm, Office
Window Alarm, 10-Pack Wireless Window Door Entry Alarm Burglar Security Alarm Magnetic Sensor Ideal for Home, Garage, Apartment, Dorm, Office
74.7 out of 5 Stars. 7 reviews
Best seller PENDALI Driveway Alarm Wireless, Solar Outdoor Motion Sensor, Weatherproof 700 ft Long Range, 1 Receiver and 1 Sensor for Home, Yard, Gate and Farm $32.99 Was $39.99
Now$3299
current price Now $32.99, Was $39.99$39.99
PENDALI Driveway Alarm Wireless, Solar Outdoor Motion Sensor, Weatherproof 700 ft Long Range, 1 Receiver and 1 Sensor for Home, Yard, Gate and Farm
1734.4 out of 5 Stars. 173 reviews
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Bitiwend, 16ft Black Motion Household Sensors & Alarms
Bitiwend, 16ft Black Motion Household Sensors & Alarms
884.1 out of 5 Stars. 88 reviews
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Natural Gas Detector, Digital Sound Warning Gas Detector, LCD/LPG/LNG Natural Gas Leak Security Detection Detector, Alarm Monitor Plug-in Sensor for Home Kitchen Restaurant Hotel School Warehouse $22.99 Was $26.89
Sponsored
Now$2299
current price Now $22.99, Was $26.89$26.89
Natural Gas Detector, Digital Sound Warning Gas Detector, LCD/LPG/LNG Natural Gas Leak Security Detection Detector, Alarm Monitor Plug-in Sensor for Home Kitchen Restaurant Hotel School Warehouse
24.5 out of 5 Stars. 2 reviews
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Vivnt Recessed Door Contact Sensor VS-DW2100-345 $17.95 Was $19.95
Sponsored
Now$1795
current price Now $17.95, Was $19.95$19.95
Vivnt Recessed Door Contact Sensor VS-DW2100-345
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Sgokeen Wireless Door Sensor Door Entry Chime, Door Open Alert with 600ft Range LED Indicators Receivers + Sensors Wireless Door Alarm,58 Ringtones Black From $13.58
From$1358
Sgokeen Wireless Door Sensor Door Entry Chime, Door Open Alert with 600ft Range LED Indicators Receivers + Sensors Wireless Door Alarm,58 Ringtones Black
1164.1 out of 5 Stars. 116 reviews
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Ecobee EB-RSHM2PK-01 Decibel Rating 1 Maximum Range 1 Range White Household Sensors and Alarms Smart Sensor 2 Pieces 2 Pack $123.66
$12366
current price $123.66Ecobee EB-RSHM2PK-01 Decibel Rating 1 Maximum Range 1 Range White Household Sensors and Alarms Smart Sensor 2 Pieces 2 Pack
1924.4 out of 5 Stars. 192 reviews
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 $31.99
Now$1799
current price Now $17.99, Was $31.99$31.99
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
2914.3 out of 5 Stars. 291 reviews
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Best seller Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System $41.60 Was $49.99 $10.40/ea
Now$4160
current price Now $41.60, Was $49.99$49.99
$10.40/ea
Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System
344.6 out of 5 Stars. 34 reviews
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Kqiang 360 Solar Outdoor Motion Sensor Alarm, Dual Working Modes,Custom Recording for Farm Security $22.99
$2299
current price $22.99Kqiang 360 Solar Outdoor Motion Sensor Alarm, Dual Working Modes,Custom Recording for Farm Security
64.2 out of 5 Stars. 6 reviews
LINKPAL Wireless Home Security Driveway Alarm, Motion Sensor Detect Alert with 2 PIR $18.98
$1898
current price $18.98LINKPAL Wireless Home Security Driveway Alarm, Motion Sensor Detect Alert with 2 PIR
413.9 out of 5 Stars. 41 reviews
NFTIGB Single Beam Infrared Photocells Motion Detector For Door Gate Opener, 98.43ft Range 12-24V IP65 Outdoor Security Anti-Theft Sensor System, White
NFTIGB Single Beam Infrared Photocells Motion Detector For Door Gate Opener, 98.43ft Range 12-24V IP65 Outdoor Security Anti-Theft Sensor System, White
Entry Sensor $13.49 Was $14.99
Now$1349
current price Now $13.49, Was $14.99$14.99
Entry Sensor
774.7 out of 5 Stars. 77 reviews
Shelly Wave Door/Window White, Z-Wave Long Range Operated Sensor, Home Automation, Compatible with Alexa, Google Home, SmartThings & Home Assistant, Bulletproof Security, Lux & Tilt Angle Measurement $34.99
Sponsored
$3499
current price $34.99Shelly Wave Door/Window White, Z-Wave Long Range Operated Sensor, Home Automation, Compatible with Alexa, Google Home, SmartThings & Home Assistant, Bulletproof Security, Lux & Tilt Angle Measurement
GREENCYCLE Wireless Motion Sensor Detector Alarm, Home Security Business Alert, Store Welcome Chime Door Entry Doorbell (918 Feet, 36 Tunes, 4 Volume Levels, LED Indicators), 1 Pack $22.89
Sponsored
$2289
current price $22.89GREENCYCLE Wireless Motion Sensor Detector Alarm, Home Security Business Alert, Store Welcome Chime Door Entry Doorbell (918 Feet, 36 Tunes, 4 Volume Levels, LED Indicators), 1 Pack
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Hosmart Wireless Driveway Alarm 1/2 Mile Range Outdoor Motion Sensor Household Sensors & Alarm From $34.99
From$3499
Hosmart Wireless Driveway Alarm 1/2 Mile Range Outdoor Motion Sensor Household Sensors & Alarm
964.5 out of 5 Stars. 96 reviews
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EXLEAF Driveway Alarm Wireless Outside,Motion Sensor Alarm 1000ft/300m Range Extra Loud Chimes Security Alarm System with 1 Receiver 2 Weatherproof Infrared Sensors Protect Property $25.02
$2502
current price $25.02EXLEAF Driveway Alarm Wireless Outside,Motion Sensor Alarm 1000ft/300m Range Extra Loud Chimes Security Alarm System with 1 Receiver 2 Weatherproof Infrared Sensors Protect Property
24 out of 5 Stars. 2 reviews
Kangaroo Motion+Entry Sensor: Indoor Security Alarm for Doors & Windows, 20-Foot Range, 110 View, WiFi Real-Time Phone Alerts, Easy Peel-And-Stick Install $42.69
$4269
current price $42.69Kangaroo Motion+Entry Sensor: Indoor Security Alarm for Doors & Windows, 20-Foot Range, 110 View, WiFi Real-Time Phone Alerts, Easy Peel-And-Stick Install
eMACROS 500ft White Weatherproof Outside Security Motion Sensor From $12.99
3 options
Available in additional 3 optionsFrom$1299
eMACROS 500ft White Weatherproof Outside Security Motion Sensor
654 out of 5 Stars. 65 reviews
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Wireless Home Security Driveway Alarm, Motion Sensor Detect Alert, Store Door Entry Chime Doorbell with 1 PIR Motion Sensor Detectors and 1 Wireless Plug-in Receiver for Front Doors Window Frames $14.98
$1498
current price $14.98Wireless Home Security Driveway Alarm, Motion Sensor Detect Alert, Store Door Entry Chime Doorbell with 1 PIR Motion Sensor Detectors and 1 Wireless Plug-in Receiver for Front Doors Window Frames
94.2 out of 5 Stars. 9 reviews
Driveway Alarm 656ft Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor-DIY Security Alert-Monitor with 38 Chimes for Indoor Outdoor Use $22.58
$2258
current price $22.58Driveway Alarm 656ft Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor-DIY Security Alert-Monitor with 38 Chimes for Indoor Outdoor Use
33.7 out of 5 Stars. 3 reviews
UDIYO Wireless Driveway Alarm Alert System Security Garage Intruder PIR Motion Sensor From $16.91
From$1691
UDIYO Wireless Driveway Alarm Alert System Security Garage Intruder PIR Motion Sensor
61.7 out of 5 Stars. 6 reviews
Clearance Smart WiFi Door & Window Sensor - Wireless Home Security Entry Detector with Real-Time Message Notifications, Ideal for Monitoring Door/Window Open Status in Smart Homes $5.89 Was $6.99
Now$589
current price Now $5.89, Was $6.99$6.99
Smart WiFi Door & Window Sensor - Wireless Home Security Entry Detector with Real-Time Message Notifications, Ideal for Monitoring Door/Window Open Status in Smart Homes
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
eMACROS Pro 4 Smart Solar Driveway Alarm (2.4G Wi-Fi Only) - App Push Notifications, 1/2 Mile Wireless Range Motion Sensor & Rechargeable Base Station with 3-Day Backup (No Camera) $56.99
Sponsored
$5699
current price $56.99eMACROS Pro 4 Smart Solar Driveway Alarm (2.4G Wi-Fi Only) - App Push Notifications, 1/2 Mile Wireless Range Motion Sensor & Rechargeable Base Station with 3-Day Backup (No Camera)
45 out of 5 Stars. 4 reviews
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HTZSAFE 1/2Mile Solar Driveway Alarm System-Up to 70FT Wide Sensor Range 3 Adjustable Sensitivities-Fully Weatherproof Outdoor Motion Sensor&Detector DIY Security Alert System $49.99 Was $59.99
Now$4999
current price Now $49.99, Was $59.99$59.99
HTZSAFE 1/2Mile Solar Driveway Alarm System-Up to 70FT Wide Sensor Range 3 Adjustable Sensitivities-Fully Weatherproof Outdoor Motion Sensor&Detector DIY Security Alert System
54.8 out of 5 Stars. 5 reviews
Fosmon WaveLink Wireless Doorbell Chime, Home Security System Alarm When Door Opens, Magnetic Door Alarm And Sensor For Store, Restaurant, Business, Kids, Elderly & More, 1 Sensor 1 Receiver From $9.99
8 options
Available in additional 8 optionsFrom$999
Fosmon WaveLink Wireless Doorbell Chime, Home Security System Alarm When Door Opens, Magnetic Door Alarm And Sensor For Store, Restaurant, Business, Kids, Elderly & More, 1 Sensor 1 Receiver
1454.1 out of 5 Stars. 145 reviews
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WiFi Door and Window Sensor, Wireless DIY smart Home Security System, Featuring APP Alarm Notifications, in Collaboration with Alexa/Smart Life/Tuya, Suitable for Houses and Apartments $80.81
$8081
current price $80.81WiFi Door and Window Sensor, Wireless DIY smart Home Security System, Featuring APP Alarm Notifications, in Collaboration with Alexa/Smart Life/Tuya, Suitable for Houses and Apartments
Wireless Driveway Alarm Motion Sensor Alert System 656FT Range Indoor Outdoor Waterproof Security Detector Kit with 2 Sensors 1 Receiver 38 Chimes 4 Volume Levels 433MHz $26.88
$2688
current price $26.88Wireless Driveway Alarm Motion Sensor Alert System 656FT Range Indoor Outdoor Waterproof Security Detector Kit with 2 Sensors 1 Receiver 38 Chimes 4 Volume Levels 433MHz
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
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(1R2S)
1344.6 out of 5 Stars. 134 reviews
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Driveway Alarm 656ft Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor-DIY Security Alert-Monitor with 38 Chimes for Indoor Outdoor Use $24.99
$2499
current price $24.99Driveway Alarm 656ft Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor-DIY Security Alert-Monitor with 38 Chimes for Indoor Outdoor Use
983.8 out of 5 Stars. 98 reviews
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3 Packs Smart WiFi Door Sensor Alarm System with Remote APP Alerts 10 Chimes DIY Security for Home Office Pet Safety 2.4GHz Wireless Expandable up to 100 Devices From $22.67
2 options
Available in additional 2 optionsFrom$2267
3 Packs Smart WiFi Door Sensor Alarm System with Remote APP Alerts 10 Chimes DIY Security for Home Office Pet Safety 2.4GHz Wireless Expandable up to 100 Devices
15 out of 5 Stars. 1 reviews
eMACROS Motion Sensor Weatherproof Adjustable 1/2 Mile Long Range Solar Wireless Driveway Alarm From $28.04
From$2804
eMACROS Motion Sensor Weatherproof Adjustable 1/2 Mile Long Range Solar Wireless Driveway Alarm
3524.7 out of 5 Stars. 352 reviews
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Riousery Smart PIR Motion Sensor App Support Infrared Induction 2.4Ghz Wide Angle Home Security Alarm for Bedroom Kitchen (3.94 inches / 10 cm) $23.52
$2352
current price $23.52Riousery Smart PIR Motion Sensor App Support Infrared Induction 2.4Ghz Wide Angle Home Security Alarm for Bedroom Kitchen (3.94 inches / 10 cm)
YoLink LoRa Smart Door Sensor Starter Kit: SpeakerHub Audio Hub & 2 Door Sensors - Up to 1/4 Mile Range, Door Left-Open Reminders, up to 5 Year Batteries, Alexa, IFTTT, Home Assistant From $16.99
6 options
Available in additional 6 optionsFrom$1699
YoLink LoRa Smart Door Sensor Starter Kit: SpeakerHub Audio Hub & 2 Door Sensors - Up to 1/4 Mile Range, Door Left-Open Reminders, up to 5 Year Batteries, Alexa, IFTTT, Home Assistant
374.6 out of 5 Stars. 37 reviews
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Driveway Alarm Motion Sensor Alarm Weatherproof Motion Detector Home Security Alert System for Outdoor Alarms Detection $16.32
$1632
current price $16.32Driveway Alarm Motion Sensor Alarm Weatherproof Motion Detector Home Security Alert System for Outdoor Alarms Detection
223.4 out of 5 Stars. 22 reviews
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Portable Motion Sensor Alarm Entrance Chime For Premises Security And Nursery Alert $16.85
$1685
current price $16.85Portable Motion Sensor Alarm Entrance Chime For Premises Security And Nursery Alert
84.4 out of 5 Stars. 8 reviews
PIR Motion Sensor Switch Security Infrared install I8T4 180° BEST Easy P9X2 From $7.25
From$725
PIR Motion Sensor Switch Security Infrared install I8T4 180° BEST Easy P9X2
15 out of 5 Stars. 1 reviews
GJX Driveway Alarm,656 Ft Long Range Wireless Driveway Alarm,Outside Weatherproof Motion Sensor Alarm with 2 Receiver and 1 Sensor,Property Protection Alarm System for Home Security $20.81
$2081
current price $20.81GJX Driveway Alarm,656 Ft Long Range Wireless Driveway Alarm,Outside Weatherproof Motion Sensor Alarm with 2 Receiver and 1 Sensor,Property Protection Alarm System for Home Security
34 out of 5 Stars. 3 reviews
Voice Prompter Store Welcome Doorbell Sensor Motion Detector Entry Chime Greeter Home Shop Retail Business Security Reminder Alarm Wireless Automatic Audio Playback $7.99
$799
current price $7.99Voice Prompter Store Welcome Doorbell Sensor Motion Detector Entry Chime Greeter Home Shop Retail Business Security Reminder Alarm Wireless Automatic Audio Playback
Driveway Alarm Wireless Outside Weatherproof, Solar Motion Sensor Detector, 1/2 Mile Long Range Driveway Alarm System with Portable Receiver, Home Security Alert System $35.99 Was $35.99
$3599
current price $35.99, Was $35.99$35.99
Driveway Alarm Wireless Outside Weatherproof, Solar Motion Sensor Detector, 1/2 Mile Long Range Driveway Alarm System with Portable Receiver, Home Security Alert System
84.8 out of 5 Stars. 8 reviews
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Driveway Alarms- 1/2Mile Solar Driveway Alarm System- Up to 70FT Wide Sensor Range- Fully Weatherproof Outdoor Motion Sensor&Detector DIY Security Alert System-2 Receivers and 1 Sensor KIT $79.99
$7999
current price $79.99Driveway Alarms- 1/2Mile Solar Driveway Alarm System- Up to 70FT Wide Sensor Range- Fully Weatherproof Outdoor Motion Sensor&Detector DIY Security Alert System-2 Receivers and 1 Sensor KIT
43.8 out of 5 Stars. 4 reviews
RKZDSR Alarm System,Solar Alarm System,Fully Weather Proof Outdoor Motion Sensor & Detector Security Alert System,1 Receiver And 1 Sensors
RKZDSR Alarm System,Solar Alarm System,Fully Weather Proof Outdoor Motion Sensor & Detector Security Alert System,1 Receiver And 1 Sensors
13 out of 5 Stars. 1 reviews
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