Ambient Temperature Sensor
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
The Ambient Air Temperature Sensor installed at the front of a condenser measures the exterior temperature and contains a thermistor with negative characteristic in which its resistance has an inverse relation to temperature. It transmits the variable resistance value to the A/C module according to the ambient air temperature. Then the A/C module controls the temperature control actuator, blower motor, mode control operation, and interior humidity.