Stable Condition output voltage:18~32V Working voltage:(V norm):24V The most starting voltage(V starts):23KVmax. Working current(l norm):1.8A The most instant concussion current: reach to 8A within 2 seconds ,and Output power(P out):35W?W norm Lighting import voltage: More than 9V Closing import voltage: less than 8V Working temperature(T case): -40℃~+105℃ Athwart voltage protect: it can not do harm to the ballast if the athwart voltage is less than 40V EMI electromagnetism available standard: S95/54/EC Power efficiency: more than 90% in stable condition