Better with Alexa: Arm and disarm Ring Alarm with your voice with a Ring Protect subscription (sold separately). Additional protection – With a Ring Protect Pro plan (subscription sold separately), get professional monitoring with 24/7 emergency police, fire and medical response, alarm cellular backup and more for $20/month. With a Ring Protect subscription (sold separately), receive mobile notifications when your system is triggered, change your Alarm modes, and monitor all your Ring devices all through the Ring app. Choose the Ring Alarm kit that fits your needs and add additional components and accessories at any time. Includes a more intuitive keypad with emergency buttons and smaller contact sensors to seamlessly blend into your home. A great fit for 2-4 bedroom homes, this kit includes one base station, two keypads, eight contact sensors, two motion detectors, and one range extender.Installation: Plugs into standard power outlets, Ring Alarm Kit required. Dimensions: 1.86 in x 3.19 in x 1.66 in. Operating conditions: Indoor use, 32°F t0 104°F. Battery life: 24-hr battery backup. Power: 100-240V 60Hz. Installation: Mounts to room corners or flat walls, Ring Alarm Kit required. Dimensions: 2.6 in x 2.6 in x 1.53 in. Power: 2 AA batteries. Installation: Mounts to doors and windows, Ring Alarm Kit required. Dimensions: 1.56 in x 2.09 in x 0.55 in. Operating conditions: Indoor use, 32°F to 120°F. Max distance between sensors: 1 inch. Leave ½” space on non-magnet side to access battery compartment. Battery life: Approximately 3 years. Power: CR2032 coin cell batteries. Connectivity: Z-Wave. Installation: Wall mount with Quick-Release Bracket or place it on any flat surface, Ring Alarm Kit required. Dimensions: 4.13 in x 4.41 in x 0.75 in. Security modes: Disarmed, Away, and Home. Power: AC Adapter, rechargeable battery included. Disclaimers: 1Ring Alarm and all Ring Alarm accessories requires a subscription for in-app features and digital notifications, including digital arming / disarming. Subscription sold separately. View the Ring Protect Plan here for pricing and details. Software Security Updates: This device receives guaranteed software security updates until at least four years after the device is last available for purchase as a new unit on our websites. Learn more about these software security updates. If you already own a Ring device, visit Software Security Updates in Ring Control Center for information specific to your device. Ring Protect Plan: By purchg, you authorize us to charge your default card or another card on file when you attach the subscription to a device. Learn more about subscription features and additional terms and conditions. Support: Click here to view more information on the Ring Alarm Kit support page.For monitoring licenses, visit ring.com/licenses. Warranty and service: Ring Alarm Kit includes 1-year limited warranty and service. Use of Ring Alarm Kit is subject to terms and conditions. Connectivity: Ethernet, wifi, Z-Wave, Bluetooth for setup. Installation: Mount to walls or place on any flat surface, Ring Alarm Kit required. Dimensions: 6.65 in x 6.65 in x 1.46 in. Operating conditions: Indoor use, 32°F to 104°F. Battery life: Rechargeable 24-hour battery backup. Power: 100-240V 50/60Hz AC Adapter Included.