... ) CE, ISO certification 4 1/2 digital voltage meter & ampere meterDP4 serires Digital Panel Meter, Voltage Meter, Ampere Meter1) 8-bit micro processor, 5 digit ... /2A/10/20/30/40/50A/100/200/300/400/500/1000/2000AYESNODP4-PAA---YESNODP4I-AV---AC/DC (Voltage): 0.2V/2V ... ---AC/DC (Ampere): 2mA/20/200mA/2A/10/20/30/40/50A/100/200/300/400/500/1000/2000AYES4-20mADP4I-PAA ...