... display 3.RS485 port 4.Matched CT Multi-loops Power Anaylzer:Intelligent Power Analyzer YD2080 is a powerful, safe, reliable measurement ... DI1 is in close status, and when power-cut, and the second loops is power-on, DI1 closed, and the indicator blinking. ... Simultaneously, the time of power-on in the second loop on the LCD is timing.DI2SPD faultWhen it errors ...