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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
NC type Wired Recessed Window Door Magnetic Contact Reed Switch door sensor Alarm switch For Security alarm system
Ring Alarm Contact Sensor 6 Pack
Aqara Door and Window Sensor, Requires Hub, Wireless Mini Contact Sensor for Alarm System and Home Automation - Yahoo Shopping
Ring Alarm Window & Door Contact Sensor (2nd Gen) 842861111064
Anti -theft Burglar Alarm, Wireless Window and Door Open Entry Alert Magnetic Contact Sensor Battery Operated Loud Siren for Home Security, Business
WiFi Smart Door Sensor, Wireless Door Window Sensor Alarm, Mini Contact Sensor for Home Security, Push Notification, Volume Adjustable, Timer, Compatible with Alexa/Google Assistant. 4 Pack - Yahoo Shopping
Anjielosmart Tuya WiFi Door and Window Sensor with Magnetic, Contact S – Zhongshan Anjielo Smart Technology Co., Ltd
Ring Alarm Contact Sensor (2nd Generation) (6-pack) Alerts you when a door or window opens at Crutchfield
Ring Alarm Contact Sensor 2-pack (2nd Gen) : Tools & Home Improvement
Ring Alarm Contact Sensor 2-pack (2nd Gen) : Tools & Home Improvement