The latest generation of LED digital message signs are extremely bright and they need to be regulated but the user in order to prevent distractions for night time drivers.
West Cost Signs recently installed a double faced 16mm Clearview LED sign in Clearwater, FL on busy Hwy 19. The sing looks great during normal daylight hours but is much too bright in the evening. Fortunately, the sign is equipped with an auto dimmer which is a photocell that detects the outside ambient light and dims or brightens the sign accordingly. The sign now runs at 30% brightness during the evening and about 80% brightness during the day.
The benefits of using the auto dimmer feature on your sign included 1. Fewer motorist complaints 2. Less power usage 3. extends the life of the digital led sign.
You can watch daytime play of 16mm LED sign at:
http://www.youtube.com/watch?v=_XPMn-zfXF0
