The maximum voltage of 500V.Meet your need of different lighting effect.This T8 Lamp Holder is very durable and long lasting which makes it the great choice to replace old lamp holder with.These T8 lamp holder are very easy to use. You can use it to replace the old and damaged lamp holder for your T8 Light.Applicable to grille lamps, stent lights, cleaning lamps, and other types of straight tube fluorescent lamps.