Ring needs to address and create brackets for door contacts like this. : r/Ring
Ring Alarm Door & Window Contact Sensor (2nd Gen) for sale online | eBay
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Door Alarm, KERUI D121 Wireless Door Window Contact Sensor Alarm with Remote Control, 3 Modes Door Open Sensor for Home Shop Security, Garage Shed Alarm, Elderly SOS, Security for Kids and Pets :
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External Magnetic Gate & Door Contacts
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Yale HSA APP Enabled Alarm Door Contact & Magnet B-HSA6010 | Toolstation
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How to install your Ring Alarm Contact Sensors on different types of doors, windows and trim – Ring Help
Buying Sense SI? | Marmitek
Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch | eBay
Yale Sync Door/Window Contact Sensor AC-DC, Allaboutsafes UK
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Overview of the GSM Door Contact Alarm - 2G & 4G - GSM Activate
