This is a small voltage and current sense PCB. DC current is determined by measuring a voltage drop across a pair of parallel 1 mOhm shunt resistors, then converted to a final analog voltage output by the TI INA-169.
This great little 30 Amp sensor works great on both AC and DC currents.
The Voltage Sensor measures the differential voltage between the input terminals and outputs the difference proportionally.
This board is a simple carrier for Allegro’s ±5A ACS714 Hall effect-based linear current sensor. This version accepts a bidirectional current input with a magnitude up to 5
Measures AC current up to 50Amps and DC Current from -50Amps to +50Amps, with dual outputs.