Hmmm... this 5v business is debateable... I've run them from close to 24vDC (with a suitable current limiting Resistor of course - at the end of the day it is no more than an LED). I must admit, the early ones (back from 2004) that have been run 24/7/365 at about 70% brightness are starting to get a bit dim, and you need to turn the brightness up to about 90% to achieve the same level as a new unit... We've have ONE dud B/L LED in that five-year period (after 3 years service at near 100% brightness supplied from about 20vDC).

Hey, nice picture Alain - nice to know what folks look like... *smiles*