For use with the Vantage Pro and Vantage Pro2 (Already included with Vantage Pro Plus and Vantage Pro2 Plus.)
Measures the sunburning portion of the UV spectrum. Allows you to display UV index, dose rate, and daily and accumulated dose.
Multi-layer filter provides a spectral response that closely matches the Erythema Action Spectrum. Diffuser provides excellent cosine response. Two-piece housing minimizes radiation heating, allows convection cooling of the sensor, and prevents the trapping of water or dust. Includes built-in level and 3' (0.9 m) cable.
The 6490 is designed to be mounted on the (optional) 6673 Davis Sensor Mounting Shelf which is below in the "May we also suggest section".