... (W)x90(D)mm Digital Sigle-phase Current Voltage Meter Performance feature High-precision measurement of Single -phase ... supports LCD show, query local dataProgrammable current and voltage change ratio Supports RS-485 communication, Modbus-RTU ... ,Current <0.4VA/phaseVoltager >300KΩ,Current <20mΩ45~65HzAC/DC 80V~270V,AC220V,AC380V,AC100V,DC48V,DC24V ... gas≤2500m Digital Sigle-phase Current Voltage Meter