You can place your thermostat on the wall or on a flat surface. We recommend that you place it away from heat sources and at a comfortable height for use.
If you are replacing the old thermostat with the Smart Thermostat, simply remove it while maintaining existing connections, place your Smart Thermostat and install it.
If you want to place the Smart Thermostat in a different place from the original one without drilling walls and passing cables, but you still need the thermostat to control the on/off of the boiler, you can install the Smart Thermostat by connecting it to the boiler via relay.
Alternatively, you can add the IRSAP NOW Starter, install it directly on the boiler, remove the old thermostat and place the Smart Thermostat wherever you like.