... saving, Timing Dimmable No MOQ,Work quiet Product nameHPS/MH Electronic 600W Ballast with switch XLDS Characteristics1, Size: 260*103*59 ... 5, Open circuit protection, short circuit protection and overload protection,Ignition failure protection, low voltage protection6,Constant output power, prolong the ... , Theater Highway Tunnel Street Lamps, Public Lighting HPS/MH Electronic 600W Ballast with switch