Answer:
Thermostat
Explanation:
A thermostat is a component that senses the temperature of a physical system and works to make sure that the system's temperature is maintained near a desired setpoint.
They are used in devices or systems that heats or cools to a setpoint temperature, for example building heating, central heating, air conditioners, water heaters, Electric Irons some kitchen utensils like ovens and refrigerators. Scientific incubators are also examples of appliances that use the thermostat In scientific literature, these devices are often broadly classified as thermostatically controlled loads (TCLs).
The thermostat in the Ac has been set to have a certain temperature and hence to leave the room in a certain temperature but the sun shining directly on the room makes it not to cool the room as much as it was programmed to. But when the sun is not shining, I.e at night, the Ac will be at its maximum keeping the room as cold as it has been programmed to be. Same happens with an electric iron.
When you are using it, it gets so hot that the thermostat in it would have to switch off the iron automatically. But the iron comes back on once the hotness seem to have reduced to below what was programmed.
