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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Window Alarm Sensors, Door Alarms for Home Security,120 DB Pool Door Alarm for Kids Safety (8 Pack)
Regular price $65.98 USDRegular priceSale price $65.98 USD -
Door Window Alarms When Opened, 10 Pack, Volume Control
Regular price $89.98 USDRegular priceSale price $89.98 USD -
Personal Security Window & Door Alarm Bell (15 Pack)
Regular price $41.98 USDRegular priceSale price $41.98 USD -
Magnetic Reed Switch MC-31 NC Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 2
Regular price $15.78 USDRegular priceSale price $15.78 USD -
Door Window Alarm Sensors, 5 Pack, 125dB, Volume Control
Regular price $57.78 USDRegular priceSale price $57.78 USD -
Door Window Alarm Sensors, 3 Pack, 125dB, Volume Control
Regular price $43.18 USDRegular priceSale price $43.18 USD -
VOXON Door Alarms for Kids Safety - Window Alarms for Personal Home Security - 2 in 1 Chime/Alarm | 3-Level Volume Control - Burglar Door Sensor Alarm for Pool House Rooms Garage RVs - 4 Pack
Regular price $33.98 USDRegular priceSale price $33.98 USD -
WiFi Door Chime, Door Alarm Sensor with Phone Notifications via App
Regular price $70.18 USDRegular priceSale price $70.18 USD -
Personal Security Window & Door Alarm Bell (Black 4Pack)
Regular price $19.98 USDRegular priceSale price $19.98 USD -
MC-32 NC Magnetic Reed Switch Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems (10 Sets)
Regular price $31.98 USDRegular priceSale price $31.98 USD -
Door Window Alarms, 120 DB Door Alarms for Kids Safety, Door Chime Alarm for Store Pool (10 Pack)
Regular price $85.98 USDRegular priceSale price $85.98 USD -
Door Window Alarm Sensors, 8 Pack, 125dB, Volume Control
Regular price $77.38 USDRegular priceSale price $77.38 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 (1-Pack)
Regular price $27.98 USDRegular priceSale price $27.98 USD -
Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors
Regular price $152.56 USDRegular priceSale price $152.56 USD -
Door Window Alarm, 90DB Door Alarms for Kids Safety, Wireless Sensor Door Window Burglar Alarm-Window Pool Alarms for Home, 6 Pack
Regular price $23.98 USDRegular priceSale price $23.98 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 (white-31)
Regular price $33.98 USDRegular priceSale price $33.98 USD