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 Chimes When Door Opens for Home - Door Alarm with Chime Adjustable Volume,5 Magnetic Door Sensors & 2 Plug-in Receivers - Door Open Chime - Indoor Range 500ft 2 Receivers + 5 Sensors
Regular price $97.98 USDRegular priceSale price $97.98 USD -
2 Pack Magnetic Reed Switch NC NO, Wired Door Window Alarm Sensor, White
Regular price $15.98 USDRegular priceSale price $15.98 USD -
5 Pack NC Magnetic Switch Contacts Door Sensor for Home Alarm Security System
Regular price $19.98 USDRegular priceSale price $19.98 USD -
Vibration Door Window Alarm 4-Pack, 120dB, Rechargeable for Home Security
Regular price $59.98 USDRegular priceSale price $59.98 USD -
YoLink Door and Window Sensor Kit: 3-Pack + SpeakerHub
Regular price $129.98 USDRegular priceSale price $129.98 USD -
5 Pack Magnetic Contacts Switch Window Door Sensor for Alarm System NC 3/8"
Regular price $13.98 USDRegular priceSale price $13.98 USD -
Door Chime, Door Alarms When Opened for Home/Business Office/Bedroom Entering, 3-Sensor + 2-Receiver with 500FT Wireless Range,58 Chimes,5-Volume Level, Entry Alert for Kids/Toddler/Dementia Safety
Regular price $87.98 USDRegular priceSale price $87.98 USD -
Adhesive Replacement Strips for Ring Contact Sensor 2nd Gen - Pre-Cut Double-Sided Tape 12-Pack (12Sensor&12Magnet Pads), No Cutting Needed, Secure Mounting for Door/Window Alarm Systems (6 pack)
Regular price $13.98 USDRegular priceSale price $13.98 USD -
Adhesive Replacement Strips for Ring Contact Sensor 2nd Gen - Pre-Cut Double-Sided Tape 12-Pack (12Sensor&12Magnet Pads), No Cutting Needed, Secure Mounting for Door/Window Alarm Systems (12 pack)
Regular price $19.98 USDRegular priceSale price $19.98 USD -
TECKNET Door Alarms for Kids Safety, Door Alarms When Opened, Window Alarm with Smart Voice Alert, 4-Level Adjustable Volume, Refrigerator Sensor Pool Alarm for Home Security、Fridge、Garage and Window
Regular price $9.98 USDRegular priceSale price $9.98 USD -
4 Sets Magnetic Reed Switch MC-33C NC Recessed Wired Door Window Alarm, Magneti Door Switch, Magnetic Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch White
Regular price $19.98 USDRegular priceSale price $19.98 USD -
Door Alarms When Opened with Remote, Door Chimes Sensor, 2-Pack
Regular price $44.98 USDRegular priceSale price $44.98 USD -
Recessed Security Alarm Contacts Door Window Sensor Magnetic Reed Switch White 4Pcs
Regular price $15.78 USDRegular priceSale price $15.78 USD -
Door Window Alarm, 90dB Wireless Sensor Door Window Burglar Alarm for Home Security, Kids Safety and Office, Garage, Apartment, House, Easy Installation
Regular price $15.98 USDRegular priceSale price $15.98 USD -
Door Window Alarm Sensors, 5 Pack, 125dB, Volume Control
Regular price $59.38 USDRegular priceSale price $59.38 USD -
Hendun Door Alarms with Remote, Open Door Chimes, Pool Alarm, 2 Pack
Regular price $43.98 USDRegular priceSale price $43.98 USD