Wifi Door Sensor: Smart Door Open/Closed Detectors, Wireless Window Sensor With App Notification Alert, Contact Sensor For Home Security, Compatible

Wifi Door Sensor: Smart Door Open/Closed Detectors, Wireless Window Sensor With App Notification Alert, Contact Sensor For Home Security, Compatible

Eufy Security Entry Sensor, Detects Opened And Closed Doors Or Windows, Door Monitoring, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor Use

5Sets MC-31B Magnetic Reed Switch Wired Surface Mount Normally Open Closed NC NO Door Contact Sensor Alarm Magnetic Door Switch Black

Ring Alarm Contact Sensor 6-Pack - 2nd Gen | Monitor 6 Doors Or Windows | Instant Alerts | Approximately 3-Year Battery Life | Slim Design | Easy

GAGALOR NO&NC 3 Wires Magnetic Garage Door Contacts Heavy Duty Alarm Switch Sensor For Roller Shutter With Adjustable Bracket

Tokatuker NC NO Magnetic Switch Wired Recessed Door Sensor Hidden Window Contact Reed Switch For Alarm System Access Control Replace

Ring Alarm Contact Sensor 2-Pack - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design | Easy Installation | Base

Ecobee Smart Sensor For Doors & Windows 2 Pack - Wifi Contact Sensor For Home Security, Energy Savings - Compatible With Smart Thermostats -

Window Door Alarm, 125Db Door Alarm For Kids Safety, Door Window Sensor For Home Security

Biaungdo 4 Pcs Brown Wired Magnetic Contact Reed Switch, Surface-Mounted NC Sensor Alarm For Window, Cabinet, Wooden Door, With Screws

Ring Alarm Contact Sensor - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design Fits Any Frame | Easy

Abode Mini Door/Window Sensor | Be Alerted To Doors & Windows Opening And Closing | Works With Apple Homekit | Requires Abode Hub

Door Chime When Door Opens, Fullhouse Door Sensor Wireless Entry Alarm With 1000ft Range, 60 Chimes And 5 Volume Levels For Business/Store/Home Black

Xfinity Door Window Sensor Home Security XHD2-LD (Latest Generation 2023)

Security Door Window Alarm, 90DB Wireless Sensor Door Window Burglar Alarm, Door Alarms For Kids Safety, Easy Installation Doorbell Alarms For Office

Door Chime, Door Sensor Chime When Door Opens, BITIWEND Door Entry Alarm For Business/Home/Office/Store, 600 ft Range, 32 Chimes 5 Adjustable Volume

Magnetic Reed Switch MC-33C NC Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,