Constant power drive, constant current output control mode; Class I structure; Non-isolated type. Input voltage: 100-277Vac/320-480Vdc/550-750Vdc selectable; Protection rating: IP67; Lightning protection rating: 4KV/6KV for 75W and below, 6KV/10KV for 100W and above. Isolation dimming function: Three-in-one dimming (0-10V, PWM, resistor dimming); Protection functions: Overload, short circuit, over-temperature, over-voltage, under-voltage protection, etc.