Features:
Monitor glass windows and doors for break-in attempts with Ring Alarm Glass Break Sensor. 
Get mobile alerts when the Glass Break Sensor detects the sound of glass shattering in your home, or set the sensor to automatically sound your Ring Alarm siren when armed in Home or Away mode. 
Ring Alarm Glass Break Sensor uses AI technology to accurately detect the sounds of different types of breaking glass and help reduce false alarms. 
Requires Ring Alarm or Ring Alarm Pro. 
Optional 24/7 professional monitoring (requires an eligible Ring Protect subscription, sold separately). 
Ring Alarm and the professional monitoring services are available and ship only within U.S. (excluding U.S. territories) and in Canada.