Voltage sensor 12s

Is this sensor compatible with pixhawk 3 PRO?

https://drotek.com/shop/en/home/749-voltage-current-sensor-board.html

Where and how would you connect?

Thanks for your help.

You can use this sensor with Pixhawk 3. You have to connect V, I and GND to the same pins of Brick 1 connector of the Pixhawk.

Merçi Jerome