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 Door Sensor Window Detector: Smart Window Contact Sensor, Wireless Magnetic Door Open Detector with Free Notification Alerts, Compatible with Alexa Google Assistant (4-Pack)
Regular price $70.28 USDRegular priceSale price $70.28 USD -
WSDCAM Door and Window Alarm for Home Wireless Alarms Security System Magnetic Alarm Sensor Close Door Reminder Loud 110 dB, 4-in-1 Mode Window Alarms 10 Pack
Regular price $79.98 USDRegular priceSale price $79.98 USD -
TECKNET Door Alarm for Door Handle, 130dB Door Alarms When Opened & Window Alarms, No-Drill Travel Door Security Device with Lanyard, Door Sensor Alarm for Home, Apartment & Hotel(Pack of 4)
Regular price $55.98 USDRegular priceSale price $55.98 USD -
Seco-Larm SM-300Q/W Pack of 6 Screw-Terminal Surface-Mount N.O. Magnetic Contacts, White; 1/2" Gap; ABS Case; Gold Plated Contacts; UL Listed; Reliable Security Door/Window Sensor
Regular price $91.20 USDRegular priceSale price $91.20 USD -
Tellegloww 10 Sets Nc Wired Door Sensor Alarm Magnetic Contact Sensor
Regular price $31.98 USDRegular priceSale price $31.98 USD -
2 Pcs Door Window Alarm,Home Magnetic Burglar Alert Sensor,Loud Door Alarms for Safety,DIY Protection Burglar Bell Alarm for Home,Office Security
Regular price $13.98 USDRegular priceSale price $13.98 USD -
Honeywell SiXCT (Each) Two-Way Wireless Door / Window Sensor by Honeywell for use w/ LYRIC
Regular price $67.98 USDRegular priceSale price $67.98 USD -
SONOFF DW2 Wi-Fi Wireless Door Window Sensor, APP Alert for Home Security & Automation, No Gateway Required, Compatible with IFTTT, for Sliding Door/Window/Hinged Door
Regular price $25.80 USDRegular priceSale price $25.80 USD -
WiFi Door Sensor Window Detector: Smart Window Contact Sensor, Wireless Magnetic Door Open Detector with Free Notification Alerts, Compatible with Alexa Google Assistant (1-Pack)
Regular price $25.98 USDRegular priceSale price $25.98 USD -
TECKNET Door Alarm for Door Handle, 130dB Door Alarms When Opened & Window Alarms, No-Drill Travel Door Security Device with Lanyard, Door Sensor Alarm for Home, Apartment & Hotel(Pack of 2)
Regular price $33.98 USDRegular priceSale price $33.98 USD -
TECKNET Door Alarms When Opened, Window Door Alarm for Kids Safety, 2-in-1 Alarm & Chime, Door Sensor for Home Security, 3-Level Volume Control, Window Alarms for Garages, Apartment, 3Pcs
Regular price $19.98 USDRegular priceSale price $19.98 USD -
MC-32 NC Magnetic Reed Switch Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 10, White
Regular price $27.98 USDRegular priceSale price $27.98 USD -
MC-32 NC/NO Magnetic Reed Switch Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 10, White
Regular price $47.98 USDRegular priceSale price $47.98 USD -
Seco-Larm SM-300Q/W Pack of 3 Screw-Terminal Surface-Mount N.O. Magnetic Contacts, White; 1/2" Gap; ABS Case; Gold Plated Contacts; UL Listed; Reliable Security Door/Window Sensor
Regular price $52.76 USDRegular priceSale price $52.76 USD -
Seco-Larm SM-300Q/W Screw-Terminal Surface-Mount N.O. Magnetic Contact, White; 1/2" Gap; ABS Case; Gold Plated Contacts; UL Listed; Reliable Security Door/Window Sensor
Regular price $32.00 USDRegular priceSale price $32.00 USD -
TECKNET Door Alarm for Door Handle, 130dB Door Alarms When Opened & Window Alarms, No-Drill Travel Door Security Device with Lanyard, Door Sensor Alarm for Home, Apartment & Hotel
Regular price $19.98 USDRegular priceSale price $19.98 USD