Ring Alarm Contact Sensors easily mount to any door or window frame in your home for easy, DIY installation. Connect them to your Ring Alarm Base Station and receive mobile alerts from the Ring app whenever your doors or windows open. You’ll always be the first to know when something’s ajar.
1.56 X 2.09 X 0.55 (inches)
2 CR2032 Coin cell batteries
Uses two CR2032 batteries, included, which may last up to 3 years depending on usage. Cold temperatures may drain battery life faster.
Z-Wave (250-foot range to Base Station open air, line of sight)
Mounts to doors and windows
Maximum Distance Between Magnet and Sensor
1 inch. Leave 1/2" space on non-magnet side to access battery compartment.
Ring Alarm Kit
1 year limited warranty