LoRaWAN water quality chlorophyll sensor is a device for measuring chlorophyll concentration in water bodies; The design method of using fluorescence principle and optical fiber to conduct the optical path; Internally added filtering algorithm, with strong resistance to external light interference. Built in temperature transmitter, capable of automatic temperature compensation. The device outputs relative fluorescence units, which facilitates the analysis of the relationship between fluorescence intensity and chlorophyll concentration based on actual conditions.Supports LoRa TDMA networking and standard LoRaWAN protocol.