The product has two parts:
TRANSMITTER : containing flowmeters, temperature sensors, and electronics. Sends captured information to the display via RF / bus. Optionally also to the cloud server.
DISPLAY : showing the water consumption and water temp. The display, behind the mirror, remains invisible unless a tap is opened. The flow
consumption remains 3 minutes in the display after the tap is closed. After this time the value is reset to zero ( but info captured is sent to the cloud server )