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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Loopo WiFi Door Window Sensor, Smart Contact Sensor with App Alerts, Compatible with Alexa & Google Assistant, Tuya Smart Life App Door Open Detector, 2.4GHz WiFi Only, No Hub Required, , 4 Pack
Regular price $57.98 USDRegular priceSale price $57.98 USD -
WiFi Door Chime, Door Alarm Sensor with Phone Notifications via App
Regular price $89.98 USDRegular priceSale price $89.98 USD -
Door Window Alarm Sensors, 3 Pack, 125dB, Volume Control
Regular price $43.18 USDRegular priceSale price $43.18 USD -
Door Window Alarms When Opened, 8 Pack, Volume Control
Regular price $77.38 USDRegular priceSale price $77.38 USD -
Magnetic Reed Switch MC-33C Normally Closed Recessed Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 3
Regular price $19.98 USDRegular priceSale price $19.98 USD -
5Sets Magnetic Reed Switch, Magnetic Door Switch/Magnetic Contact Switch/Normally Open Closed NC NO Door Alarm Window Security, for DC 5V 12V 24V Light (Black-B31)
Regular price $35.98 USDRegular priceSale price $35.98 USD -
2-Pack WiFi Door and Window Sensors,Tuya Smart Alarm with Free Notification APP Control Home Security Alarm System, No Hub Required,Compatible with Alexa, Google Home
Regular price $45.58 USDRegular priceSale price $45.58 USD -
Gebildet 4sets White Magnetic Switch Wiring NO/NC Recessed Door Sensor Hidden Window Contact Reed Switch for Access Control Replace Alarm System
Regular price $25.98 USDRegular priceSale price $25.98 USD -
Replacement Tape Compatible for GE Personal Security Window and Door Alarm
Regular price $13.94 USDRegular priceSale price $13.94 USD -
Door Window Alarm Sensors, 3 Pack, 125dB, Volume Control
Regular price $43.18 USDRegular priceSale price $43.18 USD -
Door Chime When Door Opens, Door Alarm for Home, 3-Sensor 2-Receiver, Black
Regular price $91.98 USDRegular priceSale price $91.98 USD -
WiFi Door and Window Sensors,Tuya Smart Alarm with Free Notification APP Control Home Security Alarm System, No Hub Required,Compatible with Alexa, Google Home (3-Pack)
Regular price $59.98 USDRegular priceSale price $59.98 USD -
Window Alarm Sensors, 120DB Loud Door Chimes for Store, Window and Door Alarms for Kids Safety (10 Pack)
Regular price $79.98 USDRegular priceSale price $79.98 USD -
4 Sets Magnetic Reed Switch MC-31B NC/NO Surface Mount Door Window Alarm, Magneti Door Switch, Magnetic Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch Black
Regular price $27.98 USDRegular priceSale price $27.98 USD -
WiFi Door Chime, Door Alarm Sensor with Phone Notifications via App
Regular price $65.98 USDRegular priceSale price $65.98 USD -
Personal Security Window & Door Alarm Bell | Wireless Sensor Door Window Burglar Alarm | Pack of 10
Regular price $29.98 USDRegular priceSale price $29.98 USD