Voltage / current readout 0.0V Power Sense Module

Hello folks,

I recently replaced the voltage sensor with a new one (from blue robotics). It says revision 2 on the packaging.

I’ve included two photos for you here. No led on, and it reads 0.0V all the time in QGC. I bought 3 of three and they all have that behaviour.

In the QGC setting page under Power I have it set as Voltage and Current and BlueRobotics V2.0

Any ideas why it reads 0.0 ? The robot works. When I plug in the old sensor (which appears smaller) from my older bluerov2, it reads 16.4V. Hmmmmm ?