... -saving, Timing Dimmable No MOQ,Work quiet Product nameHPS/MH Electronic 600W Ballast with switch XLDS Characteristics1, Size: 260*103*59 mm2 ... voltage protection6,Constant output power, prolong the lamp life-span7, Light weight, small size, easy establish, absolute quiet, 3 years ... , Public Plaza, Theater Highway Tunnel Street Lamps, Public Lighting HPS/MH Electronic 600W Ballast with switch