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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Magnetic Reed Switch MC-32 NC/NO Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 5, White
Regular price $33.98 USDRegular priceSale price $33.98 USD -
eufy Security Entry Sensor 4-Pack, Wireless Door and Window Sensors
Regular price $199.98 USDRegular priceSale price $199.98 USD -
Aqara Zigbee Door and Window Sensor 1 Pack, Wireless Mini Contact Sensor
Regular price $33.98 USDRegular priceSale price $33.98 USD -
Zigbee Door and Window Sensor, Real-Time Open/Close Detection, White, Wireless Smart Home Security, Powered by AAA Battery
Regular price $23.98 USDRegular priceSale price $23.98 USD -
– Smart WiFi Door and Window Sensor, Phone Notifications via Smart Life, Tuya, Alexa and SmartThings, Create Automations, No Hub Required, Easy Setup
Regular price $33.98 USDRegular priceSale price $33.98 USD -
Magnetic Reed Switch MC-31B NC/NO Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 5, Black
Regular price $33.98 USDRegular priceSale price $33.98 USD -
Door Alarms for Kids Safety 120dB Window Alarms for Home Security
Regular price $47.98 USDRegular priceSale price $47.98 USD -
Magnetic Reed Switch RC-33 NC/NO Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 5, White
Regular price $35.98 USDRegular priceSale price $35.98 USD -
4 Pcs 90dB Door Window Alarm,Wireless Sensor Alarm for Kids&Home Security
Regular price $17.98 USDRegular priceSale price $17.98 USD -
6 Pcs 90dB Door Window Alarm,Wireless Sensor Alarm for Kids&Home Security
Regular price $25.98 USDRegular priceSale price $25.98 USD -
Magnetic Reed Switch RC-36 NC/NO Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems Brown, Sets of 3
Regular price $31.98 USDRegular priceSale price $31.98 USD -
WiFi Door Sensor Window Detector: Smart Window Contact Sensor, Wireless Magnetic Door Open Detector with Free Notification Alerts, Compatible with Alexa Google Assistant (2-Pack)
Regular price $39.68 USDRegular priceSale price $39.68 USD -
Zigbee Door and Window Sensor 3pcs, Real-Time Open/Close Detection, White, Wireless Smart Home Security, Powered by AAA Battery
Regular price $59.98 USDRegular priceSale price $59.98 USD -
RC-33 NC/NO Magnetic Reed Switch Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 10, White
Regular price $67.98 USDRegular priceSale price $67.98 USD -
MC-31B NC/NO Magnetic Reed Switch Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 10, Black
Regular price $67.98 USDRegular priceSale price $67.98 USD -
Tellegloww 20 Sets Nc Wired Door Sensor Alarm Magnetic Contact Sensor
Regular price $47.98 USDRegular priceSale price $47.98 USD