thermostat
noun [ C ] uk/ˈθɜː.mə.stæt/ us/ˈθɝː.mə.stæt/
温度自动调节器，恒温器
a device that keeps a building, engine, etc. within a limited temperature range by automatically switching the supply of heat on and off
a central heating thermostat 集中供暖温度调节器