he is just saying i can set it at the boiler with a range like 50-65 degrees and no matter what anyone does with a thermostat the boiler wont allow it to go out of that range. Or i can lock the thermostats right out . Like im the god of the heat for the place.
its honeywell if that helps. says 350-250-101b honywell
but im not so sure on battery operated thermostats......