Infrared frequency 38k refers to a commonly used frequency in infrared remote controls, which is widely used in remote controls for household appliances, televisions, air conditioning and other equipment. The selection of this frequency is not accidental, but based on its stability and universality considerations.

Firstly, the frequency of 38k has been standardized in the infrared remote control. This standardization helps to avoid interference between different devices, ensuring that the remote control can accurately send instructions and be correctly decoded by the receiving device.

Secondly, the application of 38k frequency in electronic devices has good stability. This means that under normal use, the signals sent by the remote control are less susceptible to external environmental interference or misunderstanding, thus ensuring the reliability and stability of the equipment.

In addition, a frequency of 38k also has good transmission distance and penetration ability. This means that even within a certain distance, the remote control can reliably send signals to enable the receiving device to perform operations correctly, and even in the presence of some obstacles, the signal can penetrate and reach the target device.

Overall, the reason why the infrared frequency of 38k has become the mainstream choice for home appliance remote controllers is because it has advantages such as high stability, strong universality, and long transmission distance. The widespread application of this frequency has made remote control operation more convenient and fast, bringing great convenience to people's lives.