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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2 Sets Magnetic Reed Switch MC-33C NC Recessed Wired Door Window Alarm, Magneti Door Switch, Magnetic Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch White
Regular price $5.98 USDRegular priceSale price $5.98 USD -
Security Door Window Alarm, 90DB Wireless Sensor Door Window Burglar Alarm
Regular price $23.98 USDRegular priceSale price $23.98 USD -
Security Door Window Alarm, 90DB Wireless Sensor Door Window Burglar Alarm
Regular price $47.48 USDRegular priceSale price $47.48 USD -
Door Window Alarm, 90DB Door Alarms for Kids Safety
Regular price $41.98 USDRegular priceSale price $41.98 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 (6pack)
Regular price $19.82 USDRegular priceSale price $19.82 USD -
4 Pack Door Window Alarm, Magnetic Sensor Alert, Home Security System for House and Office
Regular price $17.70 USDRegular priceSale price $17.70 USD -
Door Window Alarm, 90DB Door Alarms for Kids Safety
Regular price $55.98 USDRegular priceSale price $55.98 USD -
Door Window Alarm, 90DB Door Alarms for Kids Safety, 15Pack
Regular price $37.60 USDRegular priceSale price $37.60 USD -
Security Door Window Alarm, 90DB Wireless Sensor Door Window Burglar Alarm
Regular price $15.98 USDRegular priceSale price $15.98 USD -
Door Chimes for Home, Door Alarms for Dementia with 3 Sensors & Receiver
Regular price $67.98 USDRegular priceSale price $67.98 USD -
HENDUN Outdoor Door Alarm with Remote, Waterproof IP67, 140dB Loud, 1 Pack
Regular price $37.98 USDRegular priceSale price $37.98 USD -
2 Sets Magnetic Reed Switch RC-36 NC Recessed Wired Door Window Alarm, with Lead Wire Magneti Door Switch, Magnetic Contact Sensor, for Home Security and Burglar Alarm Brown
Regular price $5.98 USDRegular priceSale price $5.98 USD -
Door Window Alarm, 90DB Door Alarms for Kids Safety
Regular price $29.98 USDRegular priceSale price $29.98 USD -
Door Window Alarm, 90DB Door Alarms for Kids Safety, 18Pack
Regular price $43.18 USDRegular priceSale price $43.18 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 (5pack)
Regular price $17.80 USDRegular priceSale price $17.80 USD -
2 Sets Magnetic Reed Switch MC-38 NC Surface Mount Door Window Alarm, with Lead Wire Magneti Door Switch, Magnetic Contact Sensor, for Home Security and Burglar Alarm White
Regular price $11.98 USDRegular priceSale price $11.98 USD