Bosch CR20RF wireless controller/room thermostat is the perfect fit for your house. It has a clear B&W LCD display and 5 touch buttons for easy to use and simple operation of the most important heating functions directly on the device or via the HomeCom Easy app. The CR20RF is battery-powered (2x 1,5V AAA), wireless communication with the Connect-Key K30 connected to you heating appliance, and it can be mounted on the wall or use the table stand for full flexibility.