Davis Instruments 7747 Daytime Fan-Aspirated Radiation Shield Kit is a great addition to your Vantage Pro2 or Pro2 Plus weather station!
The fan-aspirated radiation shield combines active and passive aspiration to minimize the effects of radiation. A solar-powered fan operates during the day and then shuts down at night when the effects of radiation are less, keeping the sensors cool and accurate. There is no backup battery required.
This kit is an economical solution for adding the benefits of fan aspiration to your wireless or cabled Vantage Pro2 or Vantage Pro2 Plus weather station. Itís about half the cost of a 24-hour fan aspirated radiation shield but almost 75 percent as effective in reducing the effects of daytime radiation!