CMa10w is a one-way wireless M-Bus temperature and humidity sensor for indoor use. The sensor offers high accuracy, user-friendliness and a long battery-life (up to 12 years), which makes it the optimal choice for tenant owners. Readout and configuration are easily performed via the LCD display or by using a mobile phone (via NFC). CMa10w has a message feature that makes it possible to communicate with the end-user via the product’s LCD display