Bought brand new and never used. The Ring Alarm Wireless Contact Sensor 2nd Gen is a set of two contact sensors designed for doors and windows. As part of the Ring brand's home security system, these sensors are battery-powered and come in a white plastic construction. The model, CS2, is lightweight at 0.5 lb each, making them easy to install on various entry points in the home. These sensors provide added security by alerting users when doors or windows are opened, helping to enhance the overall safety of the home.
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