In the field of smart home, the replacement of sensors also affects the user's living experience. From temperature and humidity sensors to body sensors, every small change can bring a significant improvement in quality of life. When a sensor in the home is found to be slow or inaccurate, timely replacement becomes necessary. Choosing new products that are compatible with the original sensor and have better performance can not only restore or even exceed the original smart experience, but also make the home environment more comfortable and safe. For example, replacing more sensitive smoke alarm sensors can respond quickly in the early stages of a fire, adding a solid line of defense to home safety. The upgrade of the fingerprint recognition sensor of the smart door lock can bring a more convenient and safe access experience. Therefore, the replacement of sensors is not only a part of technical maintenance, but also a key step to improve the quality of life.