The explosion-proof ammonia gas alarm launched by Weichuan Technology is mainly used to monitor the concentration of ammonia gas in the ambient air. The product uses a zero bias ammonia gas sensor, which has the characteristics of fast detection speed, high accuracy, and low environmental impact on measurement values. The product adopts LoRa technology combined with LoRaWAN standard protocol, which has the characteristics of long-distance low power consumption and can quickly connect with third-party platforms. It is mainly used for ammonia detection in explosive environments, such as comprehensive pipe galleries, chemical plants, etc.