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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SONOFF SNZB-04PR1 Zigbee Door and Window Sensor
Regular price $31.80 USDRegular priceSale price $31.80 USD -
10 Pack Door Alarms,90dB Window Door Alarm for Kids and Home Security
Regular price $30.98 USDRegular priceSale price $30.98 USD -
2 Pack Door Alarms,90dB Window Door Alarm for Kids and Home Security
Regular price $14.98 USDRegular priceSale price $14.98 USD -
Magnetic Reed Switch RC-35 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 $47.98 USDRegular priceSale price $47.98 USD -
Magnetic Reed Switch MC-33C NC Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 5
Regular price $31.98 USDRegular priceSale price $31.98 USD -
Tapo Door Sensor Mini, Requires Tapo Hub, Contact Sensor, T110
Regular price $35.98 USDRegular priceSale price $35.98 USD -
TECKNET 2.4G WiFi Wireless Window Door Alarm Sensor & Chime with App
Regular price $44.98 USDRegular priceSale price $44.98 USD -
eufy Security Entry Sensor E20, Window & Door Alarm, 5-Year Battery
Regular price $59.98 USDRegular priceSale price $59.98 USD -
4Sets RC-33 NC/NO Magnetic Reed Switch Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems White
Regular price $37.98 USDRegular priceSale price $37.98 USD -
Reed Switch MC-52 NC/NO Surface Mount Wired Door and Window Alarm, Ferromagnetic Door Switch, Contact Sensor for Home Security and Garage Door Burglar Alarm Reed Switch, Set of 1
Regular price $17.98 USDRegular priceSale price $17.98 USD -
eufy Security Entry Sensor 6-Pack, Wireless Door and Window Sensors
Regular price $319.98 USDRegular priceSale price $319.98 USD -
Reed Switch MC-56 NC/NO Surface Mount Wired Door and Window Alarm, Ferromagnetic Door Switch, Contact Sensor for Home Security and Garage Door Burglar Alarm Reed Switch, Set of 1
Regular price $25.98 USDRegular priceSale price $25.98 USD -
Magnetic Reed Switch RC-35 NC/NO Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems,(5 Sets)
Regular price $41.78 USDRegular priceSale price $41.78 USD -
Replacement Adhesive Strips for GE Window & Door Alarms, Double-Sided Mounting Tape, 30 Sensor Pads & 30 Magnet Pads, 60 Count
Regular price $11.98 USDRegular priceSale price $11.98 USD -
TECKNET Door Alarms When Opened, Window Door Alarm for Kids Safety, 2-in-1 Alarm & Chime, Door Sensor for Home Security, 3-Level Volume Control, Window Alarms for Garages, Apartment, 6Pcs
Regular price $31.98 USDRegular priceSale price $31.98 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, White
Regular price $31.98 USDRegular priceSale price $31.98 USD