Air conditioners equipped with remote controls use various methods to check the room temperature. These methods allow the air conditioner to regulate its cooling or heating output based on the current temperature in the room. Here are some common ways air conditioner remotes check room temperature:
Infrared (IR) Sensors: Many air conditioner remotes use infrared sensors to detect the temperature in the room. The remote emits infrared signals, and these signals bounce off objects and surfaces in the room, then return to the sensor in the remote. By measuring the time it takes for the signals to return, the remote can calculate the distance to the objects and estimate the room temperature based on the assumption that the objects have the same temperature as the room.
Thermistor: Some air conditioners have built-in thermistors. A thermistor is a type of temperature sensor that changes its resistance in response to temperature changes. The remote sends a small electrical current to the thermistor in the air conditioner, and based on the resistance measured, it can determine the temperature of the surrounding air.
Remote Temperature Sensor: Certain air conditioners come with a separate temperature sensor that can be placed in the room. This sensor communicates wirelessly with the air conditioner and relays the temperature information to the remote. The remote then uses this data to adjust the air conditioner's settings accordingly.
Wi-Fi Connectivity: Modern air conditioners with Wi-Fi capabilities can connect to a home network and communicate with a companion smartphone app. Some of these apps have the option to display the current room temperature by using the smartphone's built-in temperature sensor. The app then relays this information to the air conditioner or allows the user to adjust settings remotely based on the temperature data.
It's essential to note that the accuracy of temperature readings from air conditioner remotes can vary based on the method used and the positioning of the remote or temperature sensor. For the most precise readings, it's a good idea to place the remote or separate temperature sensor in a central and unobstructed location within the room.