#define YL105_PIN 2
In industrial water monitoring, "YL105" may also refer to the FST100-YL105 , a digital Residual Chlorine Sensor yl105 datasheet better
If you are building a battery-powered ESP8266 or ESP32 project, the YL105 is the better datasheet choice. #define YL105_PIN 2 In industrial water monitoring, "YL105"
Be aware that "YL-105" can refer to a surprising variety of other industrial products, including: yl105 datasheet better