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Surveillance EquipmentAll PhonesApple HomeKit Compatible DevicesComputer AccessoriesComputer MonitorsDesktop ComputersGeneral Electronic AccessoriesGoogleGoogle HomeGrades 6-12 ElectronicsiPad & TabletsLaptop AccessoriesLaptopsNetworkingPC GamingRestored AutomotiveRestored HomeRestored PremiumRestored ToolsRokuSecurity CamerasSecurity Cameras and Security Camera SystemsShop by BenefitShop by BrandShop by CompatibilityShop by RoomShop Cameras by TypeSmart Energy and LightingSmart Home Assistants, Controllers & HubsSurveillance CamerasTablet AccessoriesWorks with AlexaWorks with Google Assistant
Entry Sensor(390)
Uses item details. Price when purchased online
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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Best seller Hosmart Wireless Driveway Alarm 1/2 Mile Range Outdoor Motion Sensor Household Sensors & Alarm From $34.99
Sponsored
From$3499
Hosmart Wireless Driveway Alarm 1/2 Mile Range Outdoor Motion Sensor Household Sensors & Alarm
714.6 out of 5 Stars. 71 reviews
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Door Stopper Security Bar with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Door Bar, Black, 300 lbs of Force, by Guard Dog Security From $49.99
Sponsored
From$4999
Door Stopper Security Bar with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Door Bar, Black, 300 lbs of Force, by Guard Dog Security
404.5 out of 5 Stars. 40 reviews
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Flash Deal 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
794.2 out of 5 Stars. 79 reviews
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Entry Sensor (Pack of 4)
Entry Sensor (Pack of 4)
254.8 out of 5 Stars. 25 reviews
SimpliSafe 4 Pack Entry Sensor ES3 Door Window Protection Magnetic Home Security System $42.35
$4235
current price $42.35SimpliSafe 4 Pack Entry Sensor ES3 Door Window Protection Magnetic Home Security System
Clearance Sgokeen Wireless Door Sensor Door Entry Chime, Door Open Alert with 600ft Range LED Indicators Receivers + Sensors Wireless Door Alarm,58 Ringtones Black From $13.98
From$1398
Sgokeen Wireless Door Sensor Door Entry Chime, Door Open Alert with 600ft Range LED Indicators Receivers + Sensors Wireless Door Alarm,58 Ringtones Black
884.2 out of 5 Stars. 88 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)
1054.1 out of 5 Stars. 105 reviews
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Smart WiFi Door Sensor under $5! Yrmaups Smart WiFi Door Window Sensor, Wireless Entry Alarm with Real Time Notification, Home Security Sensor for Garage Shed, Compatible with Smart Life App
Smart WiFi Door Sensor under $5! Yrmaups Smart WiFi Door Window Sensor, Wireless Entry Alarm with Real Time Notification, Home Security Sensor for Garage Shed, Compatible with Smart Life App
Vivint dw12 window and door sensor $29.99
$2999
current price $29.99Vivint dw12 window and door sensor
25 out of 5 Stars. 2 reviews
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
KFFKFF Wireless Door Chime, DC 12V, Contact Sensor Alarm with 656 ft Range, App-Controlled Remote, Door Alert System for Business, Store, Home, Office (6 Sensors + 1 Receiver) $50.99 $50.99/ca
Sponsored
$5099
current price $50.99$50.99/ca
KFFKFF Wireless Door Chime, DC 12V, Contact Sensor Alarm with 656 ft Range, App-Controlled Remote, Door Alert System for Business, Store, Home, Office (6 Sensors + 1 Receiver)
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Feit Electric 3010275 Plastic Wireless Entrance Alert, White $44.61
$4461
current price $44.61Feit Electric 3010275 Plastic Wireless Entrance Alert, White
Best seller Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (6 Pcs) Home Alarm(Batteries not included) From $10.49
3 options
Available in additional 3 optionsFrom$1049
Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (6 Pcs) Home Alarm(Batteries not included)
1403.9 out of 5 Stars. 140 reviews
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SimpliSafe ES3 Entry Sensor White $14.99
$1499
current price $14.99SimpliSafe ES3 Entry Sensor White
45 out of 5 Stars. 4 reviews
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
Clearance Window Alarm, 10-Pack Wireless Window Door Entry Alarm Burglar Security Alarm Magnetic Sensor Ideal for Home, Garage, Apartment, Dorm, Office Was $15.61
Window Alarm, 10-Pack Wireless Window Door Entry Alarm Burglar Security Alarm Magnetic Sensor Ideal for Home, Garage, Apartment, Dorm, Office
33.7 out of 5 Stars. 3 reviews
Wuztai Smart WiFi Door Sensor, Wireless Real-Time Notification for Home Security Window, Door Sensor Entry Alarm $11.19 Was $12.49
Now$1119
current price Now $11.19, Was $12.49$12.49
Wuztai Smart WiFi Door Sensor, Wireless Real-Time Notification for Home Security Window, Door Sensor Entry Alarm
VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver) $55.98
$5598
current price $55.98VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver)
23 out of 5 Stars. 2 reviews
VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver) $55.98
Sponsored
$5598
current price $55.98VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver)
23 out of 5 Stars. 2 reviews
Eve Door & Window (Matter) – Smart contact sensor for doors & windows, open/closed state, automatic control of accessories, notifications, Thread $45.94
Sponsored
$4594
current price $45.94Eve Door & Window (Matter) – Smart contact sensor for doors & windows, open/closed state, automatic control of accessories, notifications, Thread
Welcome Door Sensor with 30 Audio Options and Easy Installation Method
Welcome Door Sensor with 30 Audio Options and Easy Installation Method
4X Magnetic Sensor Home Door Window Entry Warning Alarm Switch $8.20
$820
current price $8.204X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
11 out of 5 Stars. 1 reviews
iMounTEK Window/Door Security Entry Sensor Alarm
iMounTEK Window/Door Security Entry Sensor Alarm
11 out of 5 Stars. 1 reviews
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
343.9 out of 5 Stars. 34 reviews
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DSC WS4945 Wireless Door/Window Contact Sensor $57.05
$5705
current price $57.05DSC WS4945 Wireless Door/Window Contact Sensor
25 out of 5 Stars. 2 reviews
Bitiwend, 16ft Black Motion Household Sensors & Alarms
Bitiwend, 16ft Black Motion Household Sensors & Alarms
704 out of 5 Stars. 70 reviews
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Smart WiFi Door Sensor - 2.76x0.98in Wireless Window Alarm with Real-Time Alerts, Works with Smart Life App for Home Security, Garage Shop Monitoring
Smart WiFi Door Sensor - 2.76x0.98in Wireless Window Alarm with Real-Time Alerts, Works with Smart Life App for Home Security, Garage Shop Monitoring
Honeywell Home 5816WMWH Wireless Door/ Window Sensor Was $35.49
Honeywell Home 5816WMWH Wireless Door/ Window Sensor
25 out of 5 Stars. 2 reviews
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SecurityMan Door Handle Alarm with 130dB Vibration Triggered Portable Door Alarm - Perfect Alarm for Doors When Opening for Kids, Toddler, Elderly, Hotel, Travel, Bedroom (2 Pack Door Security Alarm) $29.99
Sponsored
$2999
current price $29.99SecurityMan Door Handle Alarm with 130dB Vibration Triggered Portable Door Alarm - Perfect Alarm for Doors When Opening for Kids, Toddler, Elderly, Hotel, Travel, Bedroom (2 Pack Door Security Alarm)
23 out of 5 Stars. 2 reviews
KFFKFF Door Activator, Universal Voltage for Doors up to 220lbs, Swing Door Mechanism for Individuals with Disabilities, Comes with 2 Cordless Controllers, Numeric Pad, 2 Egress Buttons $376.99 $376.99/ca
Sponsored
$37699
current price $376.99$376.99/ca
KFFKFF Door Activator, Universal Voltage for Doors up to 220lbs, Swing Door Mechanism for Individuals with Disabilities, Comes with 2 Cordless Controllers, Numeric Pad, 2 Egress Buttons
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2.4GHz Wireless TTLOCK Door Sensor Door Contact Detection Open Close Status Works with TTLOCK App Smart Locks $11.57
$1157
current price $11.572.4GHz Wireless TTLOCK Door Sensor Door Contact Detection Open Close Status Works with TTLOCK App Smart Locks
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
64.2 out of 5 Stars. 6 reviews
Wireless Smart Door Window Sensor Alarm, Home Security System with Real-Time Alerts & Instant App Notifications, Easy Installation for Houses Apartments Cabinets, White Plastic Housing $5.47 Was $6.19
Now$547
current price Now $5.47, Was $6.19$6.19
Wireless Smart Door Window Sensor Alarm, Home Security System with Real-Time Alerts & Instant App Notifications, Easy Installation for Houses Apartments Cabinets, White Plastic Housing
HomeZone Wi-Fi Smart Keypad Controlled Window or Door Alarm with Magnetic Switch, Compatible with Alexa and Google Assistant, White, 4 oz $14.97
$1497
current price $14.97HomeZone Wi-Fi Smart Keypad Controlled Window or Door Alarm with Magnetic Switch, Compatible with Alexa and Google Assistant, White, 4 oz
533.5 out of 5 Stars. 53 reviews
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Clearance HCTSHG Infrared Wireless Alarm Motion Sensor,Indoor Outdoor Property Alert Detector, Commercial Door Entry Bell,Home Security Alarm,PIR Sensor,Easy Installation,Security System Was $25.10
HCTSHG Infrared Wireless Alarm Motion Sensor,Indoor Outdoor Property Alert Detector, Commercial Door Entry Bell,Home Security Alarm,PIR Sensor,Easy Installation,Security System
Zigbee Door Sensor Window Sensor Tuya Door Opener Detector Wireless Smart Door Sensor Alarm for Home Security&Automation,1 x Smart Door Sensor,White $10.29
$1029
current price $10.29Zigbee Door Sensor Window Sensor Tuya Door Opener Detector Wireless Smart Door Sensor Alarm for Home Security&Automation,1 x Smart Door Sensor,White
Latrodar Smart WiFi Door Sensor,Wireless Window Sensor Eco-Friendly Material or Open Entry Sensor White 2.8x2 Inch Home Decor $8.99
$899
current price $8.99Latrodar Smart WiFi Door Sensor,Wireless Window Sensor Eco-Friendly Material or Open Entry Sensor White 2.8x2 Inch Home Decor
Window Alarm, 6-Pack Mini Wireless Window Door Entry Alarm Burglar Security Alarm System Magnetic Sensor Protector for Home
Window Alarm, 6-Pack Mini Wireless Window Door Entry Alarm Burglar Security Alarm System Magnetic Sensor Protector for Home
173.6 out of 5 Stars. 17 reviews
TOP! Tuya Wifi Door Sensor Window Entry Security Burglar Magnetic Alarm Smart Life for APP Remote Control $9.43
$943
current price $9.43TOP! Tuya Wifi Door Sensor Window Entry Security Burglar Magnetic Alarm Smart Life for APP Remote Control
axGear Smart WiFi Door Sensor Window Contacts Open and Close Detector $10.99
$1099
current price $10.99axGear Smart WiFi Door Sensor Window Contacts Open and Close Detector
23 out of 5 Stars. 2 reviews
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Honeywell Home PROSIXCT ProSeries SiX 2-Way Wireless Door/Window Sensor $31.99
$3199
current price $31.99Honeywell Home PROSIXCT ProSeries SiX 2-Way Wireless Door/Window Sensor
Fosmon WaveLink 2x Wireless Motion Sensor Alarm Outdoor, Home Security System Alarm, 1x Plug In Receiver, Battery Operated Motion Detector Driveway Alarm, Door Chime For Indoor And Outdoor $29.99
$2999
current price $29.99Fosmon WaveLink 2x Wireless Motion Sensor Alarm Outdoor, Home Security System Alarm, 1x Plug In Receiver, Battery Operated Motion Detector Driveway Alarm, Door Chime For Indoor And Outdoor
134.2 out of 5 Stars. 13 reviews
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Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (2 Pcs) Home Alarm(Batteries not included) $10.09
$1009
current price $10.09Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (2 Pcs) Home Alarm(Batteries not included)
63.8 out of 5 Stars. 6 reviews
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2.4GHz Wireless TTLOCK Door Sensor Door Contact Detection $12.23
$1223
current price $12.232.4GHz Wireless TTLOCK Door Sensor Door Contact Detection
Giunmcul Tax Free Weekend Smart WiFi Door Sensor,Wireless Window Sensor Real- Message Notification,Home Security Door Open Entry Sensor $9.99
$999
current price $9.99Giunmcul Tax Free Weekend Smart WiFi Door Sensor,Wireless Window Sensor Real- Message Notification,Home Security Door Open Entry Sensor
Teissuly Wireless Home Security Driveway Alarm, Entry Alert, Visitor Door Bell Chime with 1 Plug-in Receiver and 1 PIR Motion Sensor Detector Alert System, Quality Sound and LED, 38 Melodies
Teissuly Wireless Home Security Driveway Alarm, Entry Alert, Visitor Door Bell Chime with 1 Plug-in Receiver and 1 PIR Motion Sensor Detector Alert System, Quality Sound and LED, 38 Melodies
Interlogix TX-E201 Wireless Door/Window Sensor $24.99
$2499
current price $24.99Interlogix TX-E201 Wireless Door/Window Sensor
13 out of 5 Stars. 1 reviews
GREENCYCLE Motion Sensor Doorbell, Door Chime for Business Entry, Store Welcome Buzzer Monitor,Motion Sensor Detect Alarm, Caregiver Reminder for Elderly, Visitor Bell - 4 Receiver 4 Motion Sensor $88.99
$8899
current price $88.99GREENCYCLE Motion Sensor Doorbell, Door Chime for Business Entry, Store Welcome Buzzer Monitor,Motion Sensor Detect Alarm, Caregiver Reminder for Elderly, Visitor Bell - 4 Receiver 4 Motion Sensor
Other options to consider(34)
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