?? ?? ?? ?? ?? D-30A 5V,0.5?4.04A ±2% 50mV 72% 12V,0.1?1.0A ±3,-7% 100mV D-30B 5V?0.5?4.0A ±2% 50mV 74% 24V?0.1?1.0A ±3,-5% 100mV