1. There are also different types of sensor lights on stairs. For example, some are regulated by sound. When we walk into its sensing range, as long as we make a sound and cough, clapp our hands, and stomp our feet, they can light up automatically. And when the person leaves its sensing range, it will automatically turn off.
2. There is another type that does not need to emit sound. It has infrared induction, which can be transmitted to its receiver through the thermal radiation of the human body. After sending the signal. will automatically light up. Because our body has its own temperature, generally at 36~37 degrees, it will emit specific infrared rays, which will be detected by the sensor light at this time. It has a certain sensing angle, generally a distance of 120 degrees, which is probably within a range of 10 meters.
3. There is another one that we need to touch directly. This is called touch type. This kind of electronic electrode is installed inside. By touching it, it sends out a signal and can control the turn on of the light.