... meter/Amper meter detailed description:1. Measure current, voltage, kW,kvar,kWh provide digital input/ relay output, 2. RS485/Modbus ... 85~265VAC, or 80~300VDC*Programmable CT (1 ~ 9,999)*Optional digital input, relay alarm output*Simulate OLED display, high definition ... Amp Meter Auxiliary function:Two Status Inputs One Relay Alarm OutputsOne RS485 COM/Modbus PMAC615 single phase watt meter panel