Yes, it is perfectly possible to use multiple Thermostats in the same home whenever there is more than one heating circuit (e.g. ground floor and first floor). You will need to install a complete Thermostat (Thermostat + Relay) for each heating zone.
All the Thermostats can then be managed from the Netatmo Energy app.
It is not possible to connect:
- Multiple Thermostats to one Relay.
- One Thermostat to multiple Relays.
There will be no interference between the different products, as the modules are factory-paired, and each one is identified by its unique serial number on the radio signals.
First, simply check heating compatibility.