Das AC COIL TEMPERATURE SENSOR 20K NTC COPPER FOR SPLIT AC AIR CONDITIONERS Electronic Components Electronic Hobby Kit

The AC sensor on your thermostat is located near the evaporator coils. Indoor air moving toward the return vents passes by the sensor and coils. In turn, the sensor reads the temperature and checks if it matches what you’ve set on the thermostat. If the air is warmer than the desired temperature, the sensor will activate the compressor. This is where your system blows cool air into your living spaces. If the air passing the sensor is cooler or at the same temperature as what’s set on your thermostat, the compressor and your AC unit will shut off.