Smart Thermostat V3 and it's batteries
Just installed a smart thermostat V3 and find it quite silly that the thermostat is sold as a wired thermostat but is battery powered. It seems the only wired part of it is that it switches a relay to activate the always LIVE. But the thermostat itself depends on batteries to work. My existing room thermostat had a complete power circuit including neutral and earth and I had to place those wires in the park terminals. So I basically have power provision where the thermostat is but don't have the option to hard wire the thermostat. Surely Tado should have allowed direct power option. How long does the 3x batteries actually last and I assume if the batteries are dead then relay cannot activate?