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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WiFi Alarm System for Home Security, DIY, No Monthly Fee, App Alerts
Regular price $227.98 USDRegular priceSale price $227.98 USD -
WiFi Alarm System for Home Security, DIY, 120dB Alarm, App Alerts, 12 Pack
Regular price $199.98 USDRegular priceSale price $199.98 USD -
Door Chime Alarm When Open for Kids Safety, Home and Business
Regular price $43.98 USDRegular priceSale price $43.98 USD -
WiFi Alarm System for Home Security, 120dB Loud Siren, App Alerts 8pack
Regular price $119.98 USDRegular priceSale price $119.98 USD -
Hendun Pool Gate Alarm Outdoor With Remote, 140Db Waterproof Ip67, 2 Pack
Regular price $73.98 USDRegular priceSale price $73.98 USD -
Wireless Door Bell Chimes with 1 Plug-in Receivers, 1 Waterproof Push Button,2 Door Chime, Easy Installation,doorbell Chime for Home/Business with 500ft Range, 26 Chimes, 0-110dB
Regular price $67.98 USDRegular priceSale price $67.98 USD -
RC-36 NC+NO Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch Brown - (5 Sets)
Regular price $43.98 USDRegular priceSale price $43.98 USD -
Door Chime Alarm When Open for Kids Safety, Home and Business
Regular price $68.38 USDRegular priceSale price $68.38 USD -
Door and Window Contact Alarm
Regular price $17.70 USDRegular priceSale price $17.70 USD -
Door Chime Alarm When Open for Kids Safety, Home and Business
Regular price $47.58 USDRegular priceSale price $47.58 USD -
Honeywell Ademco 956RPT-WH White Roller Plunger w/ Terminals
Regular price $26.14 USDRegular priceSale price $26.14 USD -
Ring Glass Break Sensor, detect window & glass door break-ins, real-time alerts, easy setup, no base station required
Regular price $45.98 USDRegular priceSale price $45.98 USD -
MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch 2 Sets
Regular price $15.78 USDRegular priceSale price $15.78 USD -
Honeywell Ademco 5816WMWH White Door / Window Transmitter w/ Magnet (2 Pack) OPEN BOX
Regular price $117.96 USDRegular priceSale price $117.96 USD -
WS4925 Dsc
Regular price $77.78 USDRegular priceSale price $77.78 USD -
Eve Door & Window (Matter) 3 Pack – Smart Contact Sensor for Doors & Windows, Open/Closed State, Automatic Control of Accessories, Matter Over Thread, Apple Home, Alexa, Google Home, SmartThings
Regular price $63.60 USDRegular priceSale price $63.60 USD