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

Door & Window Alarms, Window Sensors, Door Sensors

Wired Door Magnetic Contact / Magnetic Switch / Magnetic Sensor - China Magnetic Sensor, Magnetic Contact

Uxcell Magnetic Sensor Home Door Window Entry Warning Switch

Anti Theft Burglar Alarm with Remote, Wireless Window and Door Open Entry Alert Magnetic Contact Sensor Battery Operated Loud 130dB Siren for Home Security, Business, Kids Safety, Pool Entrance

Haosie Wired Window Door Contact Sensor, 10pcs Wired Door Sensor, White NC Recessed Wired Door Window Sensor Magnetic Switch for Home Security Alarm System : Tools & Home Improvement

【Protective Device】This is a set of magnetic detecting switch used to protect doors and windows for the most part, protective device monitors the

Wired Metal Door Window Magnetic Contact Sensor Detector Switch Alarm Home Garage Security Kit

How do I Install a Door & Window Sensor to a Wireless Alarm

Expand your Ring Alarm system to secure each door and window in your home, and get alerts as soon as they open. Ring Alarm Contact Sensors easily mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm Base Station and receive mobile alerts from the Ring app whenever your doors or windows open. You'll always be the first to know when something's ajar.

Ring Alarm Contact Sensor 2-Pack (2nd Gen)

Ring Alarm Contact Sensor 2-pack (2nd Gen) : Tools & Home Improvement

2pcs RC-36 NC Recessed Wire Door Contact Sensor Alarm Magnetic Reed Switch Brown