A great fit for 1-2 bedroom homes, this kit includes one Base Station, one Keypad, four Contact Sensors, one Motion Detector, and one Range Extender. Includes an intuitive Keypad for in-home control and sensors that detect unexpected motion and when a door or window opens. Receive notifications in the Ring App when someone triggers the Motion Detector, opens a window or door, or sets off the siren. Ring Protect subscription required, sold separately. DIY installation, customizable protection for any home, 104-decibel siren, 24-hour backup battery, optional 24/7 emergency support with Alarm Professional Monitoring