http://www.optcorp.com/product.aspx?pid=12985
$495.00
Clouds – From “Clear” (less than -8 degrees C); to “Cloudy” (0 to 5 degrees C); to “Overcast” (0-30 degrees C)
Rain – From “Dry” (values greater than 2,000 cycles); to “Wet” (2,000 to 1,700 cycles); to “Rain” (1,700 to 400 cycles)
Light – From “Dark” (greater than 2100k ohms); to “Light” (between 2,000k and 6k ohms); to “Very Light” (between 6k and 0 ohms)