The Jerguson LumaStar LED Illuminator is the only white LED based illuminator, available in both aluminum and 316 stainless steel, that carries 3rd party certifications by world-wide agencies for use in hazardous locations.  The inherent benefits of LED’s are well known: long life, low power consumption, etc.  The use of focused, white LED’s directs an intense amount of light into the gage thus allowing the user to view an accurate level indication even under dirty conditions.