If you have a boiler or water pump, all ShellyTRVs in your home can work together operating these appliances through Shelly relays using HTTP commands or scenes.
For example: If the Shelly TRVs in all rooms in your home are fully closed, the boiler and pump can be switched off. However, if even one Shelly TRV opens, it can switch your boiler and pump back on. This way Shelly TRV will help you significantly decrease the energy used for heating and save you money.