TZ69E voltage

Hi, I’m new to Homey, I searched but couldn’t find this listed anywhere.

I have a pair of TKP TZ69’s, these have the ability to report voltage but I can’t see this data in the app, all I get is power. I did previously use Home Assistant and it did display the voltage.

The TKP website describes the following as being available:
Voltage, Current, Power factor, Instant power Wattage and Accumulated power consumption KWh report

Voltage was quite a useful thing, been trying to track down what’s glitching my AV amp.

Is there something I should be enabling somewhere?.. thanks.