w.Intercom = i;New install Vaillant 838 ecotec — tado° Community

New install Vaillant 838 ecotec

I am about to purchase a Vaillant ecotec plus 838, my question to fully utilise the boiler controls (ebus) what Tado product would i need? Wired or wireless.

My understanding is wired can control via relay and ebus where as the wireless is relay only?

Grateful for any help!