One problem to note if you use Celsius as your measurement unit. The Elk cannot remotely set or display all possible Celsius values on the HAI OmniStat. i.e. the thermostat can do 21, 21.5, 22, 22.5, 23, etc, but the Elk cannot do some values i.e. 21, 21.5, 22, 23.5, 24, etc. It is a limitation...