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 Sensor Cover Compatible with Ring (Color Matching), Snap-On Design for Ring 1st/2nd Gen Sensors, Strong Protective to Hide White Sensor, Upgrade Home Security Aesthetics - Black
Regular price $15.98 USDRegular priceSale price $15.98 USD -
WiFi Door Chime, Smart Door Open Alert Window Sensor
Regular price $61.96 USDRegular priceSale price $61.96 USD -
PILSAMAS Wi-Fi Smart Door and Window Alarms for Dementia Wandering Seniors
Regular price $107.92 USDRegular priceSale price $107.92 USD -
4 Pack Door Window Alarm,90dB Wireless Sensor for Home,Office&Kids Safety
Regular price $17.18 USDRegular priceSale price $17.18 USD -
TECKNET Door Alarms for Kids Safety, Window Alarm Pool Alarms Door Alarm for Home Security, 2-in-1 Alarm & Chime, 3-Level Volume Control, Wireless Alarm for House Hotel Cars Sheds Caravans (9 Pack)
Regular price $71.98 USDRegular priceSale price $71.98 USD -
TECKNET Door Alarms for Kids Safety, Window Alarm Pool Alarms Door Alarm for Home Security, 2-in-1 Alarm & Chime, 3-Level Volume Control, Wireless Alarm for House Hotel Cars Sheds Caravans (6 Pack)
Regular price $63.98 USDRegular priceSale price $63.98 USD -
Ring Window & Door Sensor (newest model), protect entry points with instant alerts, easy installation, no base station needed, Professional Monitoring (sold separately)
Regular price $45.98 USDRegular priceSale price $45.98 USD -
MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open,
Regular price $19.98 USDRegular priceSale price $19.98 USD -
Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm, Magnetic Door Sensor, Magnetic Reed Switch White, Magnet Near - Connect Circuit, Magnet Away - Break Circuit
Regular price $19.98 USDRegular priceSale price $19.98 USD -
Smart Door Sensor Chime, Wifi Door Open Alert Window Sensor
Regular price $77.96 USDRegular priceSale price $77.96 USD -
4 Sets NC Wired Door Alarm Magnetic Contact Sensor with Double Side Tape
Regular price $19.98 USDRegular priceSale price $19.98 USD -
Ring Window & Door Sensor (newest model) 2-pack, protect entry points with instant alerts, easy installation, no base station needed, Professional Monitoring (sold separately)
Regular price $69.98 USDRegular priceSale price $69.98 USD -
Gebildet 3 Sets White Magnetic Switch Wiring NO/NC Recessed Door Sensor Hidden Window Contact Reed Switch for Access Control Replace Alarm System
Regular price $19.98 USDRegular priceSale price $19.98 USD -
2-Pack Window/Door Alarm When Opened for Kids/Dementia Safety/Home Security
Regular price $41.78 USDRegular priceSale price $41.78 USD -
Window & Door Alarm When Opened 2-Pack for Kids Safety/Home Security, White
Regular price $37.98 USDRegular priceSale price $37.98 USD -
Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm,Magnetic Reed Switch Brown,Magnetic Door Sensor,Magnet Near - Connect Circuit, Magnet Away - Break Circuit
Regular price $19.98 USDRegular priceSale price $19.98 USD