Function- Check data at any time and anywhere via smartphone (WeatherHub-App) and internet-browser (WH Observer-platform), ideal for professional use- Control of temperature and humidity (indoor or outdoor) and simultaneous temperature monitoring of cooling and air conditioning equipment or liquids via professional cable sensor- Large measuring range (up to 110 ° C), high accuracy- Adjustable alarm limits, notification in the event of alarm- Additional app functions (graphics, max.-min.-function, data export)- Memory over 18 months- 898 MHz- Only for operation with the WeatherHub gateway (sold separately in sets, e.g. cat.-no. 31.4001.02)