WS9150 Includes the following items:
    - Base Unit
    - Outdoor temperature transmitter TX 16
    - Possibility of connecting 4 TX16 transmitters as an option

Feature and Specification

Hour
    - Display 12 or 24 Hours 
    - Calendar with date / month or day / date display

Indoor/Outdoor Temperature
    - Measure units : °C or °F, range : from -9.9°C to + 60 °C
    - Measure units : °C or °F, range : from 29.9 °C to + 69.9 °C 
    - Reading every 15 seconds for indoor and 5 minutes for outdoor

Outdoor transmitter
    - Data transmitted at 433 MHz
    - Transmission: 100 metres (in open field)

    - Forecast: Barometer with icon display
    - Indoor comfort level display: happy or sad face - Happy face display when indoor temperature is between +20°C and +26°C with     
      relative humidity of 45 % to 65 % and sad face display outside these ranges.
    - Atmospheric pressure: Measure unit : hPa / inHg