LoRaWAN carbon monoxide（CO） sensor is a new wireless IoT gas sensor that integrates collection, monitoring, and transmission. Using a three electrode electrochemical gas sensor and high-performance microprocessor to monitor the concentration of carbon monoxide in the environment. Built in temperature and humidity sensors can be used to monitor temperature and humidity values in the environment. It has the characteristics of high sensitivity, high resolution, small size, low power consumption, high stability, and strong anti-interference ability. Supports LoRaWAN protocol for wireless long-distance transmission, suitable for industrial safety, environmental monitoring, energy storage security and other fields.