Flashing lights can be disturbing, so it is smart to
dim them to the optimal level. With the help of the Vaisala Visibility
Sensor PWD20W you can conform to local regulations and at create a
comfortable living environment for the surrounding community. Installed
on top of the nacelle, the PWD20W detects visibility for onshore and
offshore applications. Operators use the visibility information to make
decisions about dimming the obstruction lights.