w.Intercom = i;add-on wireless temp sensor or add-on smart thermostat? — tado° Community

add-on wireless temp sensor or add-on smart thermostat?

quick question.

i have a tado sytem already in place (uk combi boiler), controlling just heating 1 zone.
3 rads with smart trvs.
smart thermostat running as a wireless temp sensor.

i want to add a wirless temp sensor in the other 2 rooms that only have the smart TRVs for better/more accurate temps.

on the store they have a "Add-on Wireless Temperature Sensor" and a "Add-on Smart Thermostat" (both at the same price currently).

is it correct that i just need the "Add-on Wireless Temperature Sensor" ?