Four cable 230v installation

Hi,

I have purchased Tado online from a French retailer and will pick up the smart thermostat and four TRVs tomorrow.

I want to assure a seamless installation :-)

My current thermostat in the hallway has four cables going to it as follows:

Contact 1 : 230v in blue cable
Contact 2 : 230v in red cable
Contact 3 : nothing
Contact 4 : 230v switch 1A brown cable
Contact 5 : 230v switch 1A orange cable

The other end of these cables connect to my Saunier Duval Isotwin combi boiler.

Where will these four cables connect to on the Smart Thermostat base plate ?

Many thanks !

Rob