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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Zigbee Door Sensor 4 Pack, Smart Contact Sensor for Door Window Security
Regular price $72.18 USDRegular priceSale price $72.18 USD -
TECKNET Door Window Alarm, Personal Safety Two-Way Door and Window Alarm System, Door Alarms for Kids Safety, 2-in-1 Alarm & Chime, 3-Level Volume Control, Door Alarm for Home Security(6 Pack)
Regular price $47.78 USDRegular priceSale price $47.78 USD -
TECKNET Door Alarms When Opened for Kids Safety, 130dB Loud Adjustable Volume Window Alarm with Flashing LED, 4 Modes Door Alarm with Remote 60m/200ft, Easy to Install for Home Security, 4PCS
Regular price $55.98 USDRegular priceSale price $55.98 USD -
Window & Door Alarm When Opened 5-Pack for Kids Safety/Home Security, Black
Regular price $64.58 USDRegular priceSale price $64.58 USD -
Ring Window & Door Sensor (newest model) 6-pack, protect entry points with instant alerts, easy installation, no base station needed, Professional Monitoring (sold separately)
Regular price $179.98 USDRegular priceSale price $179.98 USD -
5X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,to DC 5V. Light (white-m38-5pcs)
Regular price $31.98 USDRegular priceSale price $31.98 USD -
3-in-1 Rechargeable Door Alarm, Personal Alarm for Women College
Regular price $45.98 USDRegular priceSale price $45.98 USD -
Security Door Window Alarm, 90dB Burglar Alarm Sensor for Home & Kid Safety
Regular price $29.98 USDRegular priceSale price $29.98 USD -
TECKNET Door Alarms for Kids Safety, Window Alarm Pool Alarms Door Alarm for Home Security, 2-in-1 Alarm & Chime, 3-Level Volume Control, Wireless Alarm for House Hotel Cars Sheds Caravans (3 Pack)
Regular price $35.98 USDRegular priceSale price $35.98 USD -
UHPPOTE Wired Magnetic Contact Sensor Switch for Door Window Alarm (5 Pack)
Regular price $23.98 USDRegular priceSale price $23.98 USD -
2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,DC 3V to 12v Lamp(White)
Regular price $19.98 USDRegular priceSale price $19.98 USD -
3-in-1 Personal Safety Door Alarm for Travel Home Window, 130dB Loud Siren and Strobe Light, Portable Rechargeable with Doorbell and Night Light Flashlight, Rental Friendly No Drill (Baby Pink)
Regular price $59.90 USDRegular priceSale price $59.90 USD -
Window & Door Alarm When Opened 2-Pack for Kids Safety/Home Security, Black
Regular price $37.98 USDRegular priceSale price $37.98 USD -
PILSAMAS Wi-Fi Smart Door Alarm, Door Sensor Chime When Opened 2 Set
Regular price $79.98 USDRegular priceSale price $79.98 USD -
Gebildet 3 Sets NO/NC Black Magnetic Switch Wiring Recessed Door Sensor Hidden Window Contact Reed Switch for Access Control Replace Alarm System
Regular price $19.98 USDRegular priceSale price $19.98 USD -
TECKNET Door Alarms for Kids Safety, 130dB Loud Adjustable Volume Window Alarm with Flashing LED, 4 Modes Door Alarm with Remote 60m/200ft, Easy to Install for Home Security
Regular price $32.38 USDRegular priceSale price $32.38 USD