RING Alarm Kit 2.0 With a new look and the same great protection, Alarm Security 5 Piece Kit is an ideal way to get started in whole-home protection for your house or flat. Quick to install, easy to use and completely customisable to fit your home. Includes: Base Station Keypad Contact Sensor Motion Detector Range Extender Depth: 37 MM Real-time notifications - Receive notifications when any of your Alarm sensors are triggered. 24-hour backup battery - Keep your home safe and secure, even if the power goes out. Optional Cellular Backup - Continue monitoring your home in the event that your system goes offline. Optional Assisted Monitoring - Add an extra layer of protection with our optional Assisted Monitoring service. Height: 170 MM Width: 170 MM