Features:
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. 
Put whole-home security at your fingertips with Ring Alarm, a do-it-yourself alarm system. 
Includes a more intuitive keypad with emergency buttons and smaller contact sensors to seamlessly blend into your home. 
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.
Better with Alexa: Arm and disarm Ring Alarm with your voice and get mobile alerts about the sound of broken glass or smoke alarms with Alexa Guard. Call trained agents from your Echo who can request the dispatch of emergency responders with Alexa Guard Plus, included with an eligible Ring Protect plan.