hi Hilbrand,
it looks like there might be a formatting error in the binding for the voltage channel for the HS110. The error in the logfile says
Exception while formatting value '244.449356' of item Plug_TPLK_1_Voltage with format '%d V':
If i set a format for the channel item the error goes away, but as the other channels are preformatted I thought i’d bring this to your attention.