... Energy-saving, Timing Dimmable No MOQ,Work quiet Product nameHPS/MH Electronic 600W Ballast with switch XLDS Characteristics1, Size: 260*103 ... , Low THD3, Wide operating voltage range4, Energy-saving up to 15%-45%5, Open circuit protection, short circuit protection and overload ... , Public Plaza, Theater Highway Tunnel Street Lamps, Public Lighting HPS/MH Electronic 600W Ballast with switch