uv lamp electronic ballast 1.CE,CB,SAA,ROHS,ISO9001 approved 2. ... .98,THD:15% 4.Voltage:120V or 230V uv lamp electronic ballast1.for UV lamp 7W,9W,11W,13W,18W.2.power factor selection ... instant start selectable 8.Average useable life:>20000hrs9.End of lamp life protection.10.Apply plug- in wiring terminal, convenient installation11 ... ,high power factor >0.98 7W 9W 11W 13W 18W uv lamp electronic ballast