... P, PF, F, Kw 2. RS485 output / DC4-20mA output / DI / DO 3. LED display YD8380 series panel meter operation instructionGeneral ... single phase current, voltage input, three lines LED displays + one active pulse output.YD8381: single phase current, voltage input, ... single phase current, voltage input, three lines LED displays + one DC4-20mA output + one active pulse outputYD8385: single phase current ...