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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Door Chime, Satisure Wireless Sensor Alarm for Home, Business, Store
Regular price $31.96 USDRegular priceSale price $31.96 USD -
3 Sets MC-31B NC & NO Door Window Contact Sensor Alarm Magnetic Reed Switch with Screws White
Regular price $23.98 USDRegular priceSale price $23.98 USD -
Replacement Adhesive for Ring Alarm Contact Sensors & Magnets (2nd Gen)
Regular price $17.84 USDRegular priceSale price $17.84 USD -
Door Chime, Satisure Wireless Door Entry Alarm for Store & Office, Black
Regular price $67.98 USDRegular priceSale price $67.98 USD -
Sensor Riser for Ring | Alarm Contact Sensor Riser 2nd Gen | Alarm Spacer with 3M Adhesive - Sensor/Magnet Not Included (1 inch)
Regular price $19.98 USDRegular priceSale price $19.98 USD -
RC-36 NC+NO Recessed Security Window Door Contact Sensor Alarm Magnetic Reed Switch - (2 Sets)
Regular price $27.98 USDRegular priceSale price $27.98 USD -
Door Chime, Satisure Wireless Door Entry Alarm for Store & Office
Regular price $67.96 USDRegular priceSale price $67.96 USD -
Sensor Riser for Ring | Alarm Contact Sensor Riser 2nd Gen | Alarm Spacer with 3M Adhesive - Sensor/Magnet Not Included (1/4 inch)
Regular price $19.98 USDRegular priceSale price $19.98 USD -
MC-38 Door Window Contact Sensor Alarm Magnetic Reed Switch with Screws White - (5 Sets)
Regular price $19.98 USDRegular priceSale price $19.98 USD -
MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch - (2 Sets)
Regular price $16.38 USDRegular priceSale price $16.38 USD -
Door Stop Alarm with 120DB Siren Door Stop for Home & Travel (White) (Pack of 1)
Regular price $15.98 USDRegular priceSale price $15.98 USD -
5 Sets Magnetic Contacts Wired Window Door Contact Sensor Magnetic Reed Switch NC Surface Mounted Alarm Switch Sensor
Regular price $17.98 USDRegular priceSale price $17.98 USD -
5 Sets Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Contact Sensor Alarm White
Regular price $17.78 USDRegular priceSale price $17.78 USD -
Door Stop Alarm with 120DB Siren Door Stop for Home & Travel (White) (Pack of 2)
Regular price $23.96 USDRegular priceSale price $23.96 USD -
Garage Door Bracket, Compatible with Alarm Sensor 2nd Gen, Gray
Regular price $27.98 USDRegular priceSale price $27.98 USD -
SimpliSafe Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System
Regular price $31.98 USDRegular priceSale price $31.98 USD