What exactly do i need to buy

Options

Hi all New to the Tado experience and wondering what to buy. Thank you for your help in advance

current system

oil fired boiler on a standard 24hour mechanical time clock.

4 heat zones with wired thermostats. Just the standard mechanical type. Twist up or down😊.

Have excellent fibre broadband throughout the house 100Gb +

Not relly interested in trvs just make the system smart.

Thank You