Voltage?

Am I correct that the RB5009 has /system/health CPU TEMP, VOLTAGE, JAC VOLTAGE, POE-IN VOLTAGE, POE-OUT CONSUMPTION, BOARD-TEMPERATURE1

The hEX has /system/heath TEMPERATURE and VOLTAGE?

The AX has/system/health but only CPU-TEMPERATURE (no voltage)?

The AC doesn’t have /system/health?

Cube has /system/health but no data

Are these difference due to different hardware?

I don’t know if they all have what You said, but yes: any difference would be due to hardware. Some kits just have more/different sensors than others.

Thank you.

FYI, I looked at Winbox/ROS on each of these devices and what I wrote reflects what I saw as available.

It would be nice if all the hardware provided the same health data, but it’s a detail of far lower importance to so many other details.