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.
-
Magnetic Reed Switch NC NO COM Surface Mount Wired Door Window Contact Sensor with Cover for Home Security and Burglar Alarm Systems MC-31 5pcs
Regular price $29.98 USDRegular priceSale price $29.98 USD -
Magnetic Reed Switch NO Surface Mount Wired Door Window Contact Sensor with Cover for Home Security and Burglar Alarm Systems MC-31 5pcs
Regular price $27.98 USDRegular priceSale price $27.98 USD -
7939WG-WH - Ademco Surface Mount Contacts (White)
Regular price $23.32 USDRegular priceSale price $23.32 USD -
3-in-1 Alarm - Door Left Open Alarm, Freezer Chime with Delay, 0/5/10/30/60 Seconds, 2/5 Minutes, Window Ajar Alert, 80 to 120 dB, Close-Doors Reminder. (White)
Regular price $33.82 USDRegular priceSale price $33.82 USD -
3-in-1 Alarm - Door Left Open Alarm with Delay, 0/5/10/30/60 Seconds, 2/5 Minutes, Window Ajar Chime, Close Door Reminder, 80 to 120 dB, Time Delay Alerts. (Grey)
Regular price $35.46 USDRegular priceSale price $35.46 USD -
3-in-1 Alarm - Door Left Open Chime with Delay, 0/5/10/30/60 Seconds, 2/5 Minutes, Door Ajar Alarm, Close Reminder, 80 to 120 dB, Time Delay Alert. (Black)
Regular price $35.64 USDRegular priceSale price $35.64 USD -
uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC35
Regular price $16.38 USDRegular priceSale price $16.38 USD -
Door Stop Alarm with 120DB Siren Door Stop for Home & Travel (Black) (Pack of 2)
Regular price $19.96 USDRegular priceSale price $19.96 USD -
Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Contact Sensor Alarm Brown - (10 Sets)
Regular price $25.98 USDRegular priceSale price $25.98 USD -
Door Stop Alarm with 120DB Siren Door Stop for Home & Travel (Black) (Pack of 1)
Regular price $14.38 USDRegular priceSale price $14.38 USD -
Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Contact Sensor Alarm Brown 5Pcs
Regular price $17.78 USDRegular priceSale price $17.78 USD -
Door Stop Alarm with 120DB Siren Door Stop for Home & Travel (Black) (Pack of 3)
Regular price $37.98 USDRegular priceSale price $37.98 USD -
TAODAN 2pcs Recessed Door Magnetic Switch Wired NC Home Security Door Window Magnet Alarm Contact Sensor
Regular price $13.98 USDRegular priceSale price $13.98 USD -
Door Stop Alarm with 120DB Siren Door Stop for Home & Travel (White) (Pack of 4)
Regular price $49.98 USDRegular priceSale price $49.98 USD -
2 Sets MC-33CNormally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch Home Security Burglar Alarm System
Regular price $17.18 USDRegular priceSale price $17.18 USD -
Door Stop Alarm with 120DB Siren Door Stop for Home & Travel (White) (Pack of 3)
Regular price $31.98 USDRegular priceSale price $31.98 USD