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Alarm Contact Sensor - 2nd Gen - Instant Window & Door Alerts - Approximately 3-Year Battery Life - Slim Design Fits Any Frame - Easy Installation - Base Station Required 1-Pack Contact Sensor

Get instant mobile alerts when doors and windows open in your home.
Now smaller to enable increased placement options.
Easy installation with no tools required.
See more. Know more. Protect more. - Record 24/7 on your eligible cameras, scroll back in time to rewatch what you missed, get alerts for people and package, and so much more with an compatible Ring Home subscription (sold separately).
Includes two 3V CR2032 batteries.
Requires the Ring Alarm Base Station.

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Power	CR2032 coin cell batteries
Battery life	Approximately 3 years
Max distance between sensors	1 inch. Leave ½” space on non-magnet side to access battery compartment
Operating conditions	Indoor use, 32°F to 120°F (0°C to 49°C)
Dimensions	1.56 in x 2.09 in x 0.55 in
Installation	Mounts to doors and windows, Ring Alarm Kit required
Connectivity	Z-Wave (250-foot range to Base Station open air, line of sight)
Warranty and service	1-year limited warranty and service included. Use of Ring Alarm Kit is subject to the terms found here. License information can be found here.
Support	Click here to view more information on the Ring Alarm Kit support page.For monitoring licenses, visit ring.com/licenses.