LoRaWAN integrated sodium ion transmitter, using PVC membrane sodium ion selective electrode, real-time monitoring of sodium ion concentration in water (0.1-200mg/L, accuracy ± 5% FS), built-in Pt1000 automatic temperature compensation. Supports LoRaWAN long-distance wireless transmission (multiple frequency bands such as CN470/US915/EU868), OTAA Class A/C mode, default reporting period of 10 minutes, DC 10-28V power supply. Suitable for online monitoring of sodium ions in industrial wastewater, surface water, drinking water, and agricultural production processes, with low power consumption and easy deployment, to assist in the construction of smart water management and environmental protection IoT.