... ballast.Welthink series digital electronic ballast can run HPS and MH bulbs both automatically under 100V~240V, ... features of the Welthink series HPS/MH electronic ballast.Run for HPS and MH lamps both.High power ... EMC, ROSH,CE,TUV.Suitable Bulbs400W, 600W, 1000W HPS/MH bulb of America and Europe standard Electrical Performance ... ≥0.98≤10%100~240600Dimension of 600W: L: 91 in(359mm) W: 24.60 in(97mm) H ...