Unfortunately, it has the hardest hardware interface. The functions of the three buttons are not clear and can change during different operations. The manual is poorly written, and configuration of the unit without the manual in hand is impossible. There is no equipment in the field. Configuration only consists of reporting latitude, longitude, and elevation of your site to the company.
Data is sent daily through fax or e-mail.
This makes the interface with E-Weather dependent on your computer or fax machine, so this could vary. Additionally, E-Weather is a forecast. All of the other systems report what has already happened, while E-Weather can give you a head start on the upcoming weather. Forecasts are also a drawback, because forecasts can be wrong. The quality of forecast data is very good for temperature and relative humidity, but not as strong for precipitation and leaf wetness.