PMAC600A single phase digital voltmeter, LED display voltage value, RS485/ Modbus relay output, ... detailed product description PMAC600A single phase digital voltmeter, LED display voltage value, RS485/ Modbus relay output, 4~20mA ... power meter supports single measurement or multiple measurements. LED display, three keys are used to set up parameters, ... size: 90mm x 45mm PMAC600A voltage meter panel LCD