Normal working viltage:8V-18V Working current(at 12V):3.4A Input voltage:12V The max current when lighting the lamp:5.6A Output power:35W +/- 0.5W Inatant voltage when lighting the lamp:23kV Working temperature:-40`C--+105`C The ballast elecreomagnetic compatibility standards EMI:S95/54/EC Reberse connection protect,High & low protect,Unload peotect,Short circuit protect so as not to damage ballast and bulbs Shock/water and dust-resistant protection Dimensions:91*78*31mm