[werk_ag]

I'm afraid that with your power consumption requirements will be very difficult to have a transmitter unit with a good RF covering range, by other hand there many weather instruments such as some anemometers which require more power and higher voltages to operate.

Once WeatherDuino is designed to support the widest range of weather instruments as possible, develop a low low power transmitter isn't suitable for our goal. By other side, as we intend to continue using Arduinos is our systems, power consumption hardly will be so low.