The SYS-CNB-3503 surface water five-parameter monitoring buoy system is the latest online water monitoring system launched by our company and mainly used for online monitoring of surface water in rivers, lakes, reservoirs and other places. The system mainly consists of the multi-parameter (all-in-one) water sensor (turbidity, Dissolved oxygen, conductivity, pH, ORP, temperature, etc.), buoy, solar panel, data acquisition instrument (including GPRS/NB-IoT and GPS), antenna, night alarm lamp, etc. It adopts the integrated design and therefore is small, delicate, easy to transport and install, and suitable for extensive use.