The QI-50-V-485 is an AC/DC current transformer which is galvanically isolated from the measuring circuit. The function and appearance of this device are very similar to a standard active CT, however it is able to measure the DC component and AC TRMS.
The transformer has a RS485 Modbus serial output and an analogue output 0-10 V. The span and zero can be freely configured through the serial port and the Modbus address assigned.