Hi - We have just installed a Quattro 48/10000 230v with input from a FIMER PV Inverter. The Quattro PV Assistant controls the inverter output via frequency changing and its great! When there is an excess of power available it would be good to switch on other loads in the home such as heaters etc. Are there any recommendations for UK switches/plugs which can be set to the work with the Victron frequency change? Many thanks for any help.