Collection: Door & Window Alarms
Explore alarms and contact sensors that indicate when doors or windows open. Check mounting requirements, sensor spacing, power sources, and hub compatibility before purchasing.
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Door Stop Alarm with 120DB Siren Door Stop for Home & Travel (Black) (Pack of 4)
Regular price $47.98 USDRegular priceSale price $47.98 USD -
Window and Door Alarms for Home Security, Door Chimes When Door Opens for House,Office,Business Safety(3 Pack)
Regular price $37.98 USDRegular priceSale price $37.98 USD -
Door Window Alarms, 120DB Door Alarms for Kids Safety, Security Alarm with Chime for Store Pool, 10 Pack
Regular price $77.98 USDRegular priceSale price $77.98 USD -
WiFi Door Window Alarm, Smart Contact Sensor with APP Alerts & Sound Light Alarm, DIY Home Security System for House, Apartment, Office (Battery Not Included)
Regular price $51.98 USDRegular priceSale price $51.98 USD -
Door Window Alarms, 120DB Door Alarms for Kids Safety, Security Alarm with Chime for Store Pool, 6 Pack
Regular price $49.98 USDRegular priceSale price $49.98 USD -
Recessed Door Contacts NC Security Alarm Window Sensors with Magnetic Reed Switch. 3⁄4 Inch Door Contact Position Switches DCS Work with All Access Control and Burglar Alarm Systems White 5pcs
Regular price $19.38 USDRegular priceSale price $19.38 USD -
Ring Outside Door Sensor 2-pack, monitor gates, garages & sheds, weather-resistant, instant alerts, no base station needed, Professional Monitoring (sold separately)
Regular price $79.98 USDRegular priceSale price $79.98 USD -
Reed Switch MC-58 NC/NO Surface Mount Wired Door and Window Alarm, Ferromagnetic Door Switch, Contact Sensor for Home Security and Garage Door Burglar Alarm Reed Switch, Set of 1
Regular price $25.98 USDRegular priceSale price $25.98 USD -
eufy Security Entry Sensor 2-Pack, Wireless Door and Window Sensors
Regular price $109.98 USDRegular priceSale price $109.98 USD -
WiFi Magnetic Door Sensor Alarm with App That Alerts Your Phone, Mini Wireless Window Alarms When Opened for Home Security, No Hub Required, Smart Sliding Door Contact Sensors Chimes Safety Protection
Regular price $33.98 USDRegular priceSale price $33.98 USD -
Tapo Door Sensor Starter KIT, Matter Compatible, 3X Smart Door Window Contact Sensor and 1x Smart Hub with Built-in Chime, Smart Automation, Real-Time Notification, T31 KIT
Regular price $99.98 USDRegular priceSale price $99.98 USD -
4 Pack Door Alarms,90dB Window Door Alarm for Kids and Home Security
Regular price $17.50 USDRegular priceSale price $17.50 USD -
Door Window Alarm, 90dB Door Alarms Sensor for Kids Safety, Home Security, Door Window Burglar Alarm, Window Pool Alarms for Home, Apartments, Offices, Hotel Rooms (10pack)
Regular price $25.18 USDRegular priceSale price $25.18 USD -
2 Pcs 90dB Door Window Alarm,Wireless Sensor Alarm for Kids&Home Security
Regular price $15.18 USDRegular priceSale price $15.18 USD -
Reed Switch MC-51 NC/NO Surface Mount Wired Door and Window Alarm, Ferromagnetic Door Switch, Contact Sensor for Home Security and Garage Door Burglar Alarm Reed Switch, Set of 1
Regular price $19.98 USDRegular priceSale price $19.98 USD -
Ring Outside Door Sensor, monitor gates, garages & sheds, weather-resistant, instant alerts, no base station needed, Professional Monitoring (sold separately)
Regular price $45.98 USDRegular priceSale price $45.98 USD