The water quality pH monitoring unit launched by Weichuan Technology is mainly used to detect the pH value in solutions such as tap water. The sensor used in this product adopts a one-time molding process without the need for secondary calibration, and the signal output is stable and reliable. The RF part adopts LoRa technology, supports LoRaWAN standard protocol, has a long transmission distance, reliable and stable communication, and is widely used in thermal power, chemical fertilizers, metallurgy, environmental protection, pharmaceuticals, biochemistry and other occasions.