Alarm Window and Door Contact Sensor

Expand your Ring Alarm system to secure each door and window in your home, and get alerts as soon as they open. Subscription required, sold

Anti -theft Burglar Alarm, Wireless Window and Door Open Entry Alert Magnetic Contact Sensor Battery Operated Loud Siren for Home Security, Business

Ring Alarm Contact Sensor Installation, DIY

Ring Alarm Contact Sensor 6 Pack

Installing Ring Alarm Contact Sensors on Different Types of Doors, Windows, and Trim

N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-33 10pcs - Ideal Supply Inc (dba Ideal Blasting Supply)

Door Contact Sensors

NC type Wired Recessed Window Door Magnetic Contact Reed Switch door sensor Alarm switch For Security alarm system

3 pcs Brown Wired Door Contacts Surface Mount NC Security Alarm Door Window Sensors. These Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems

For example, get real-time alerts at the exact moment you have an unexpected guest, a runaway child, an opened safe or an escaped pet.

Treatlife Smart Door & Window Sensor (Smart Hub Not Included) ZCS-10

Aqara Door and Window Sensor, Requires Hub, Wireless Mini Contact Sensor for Alarm System and Home Automation - Yahoo Shopping