This product is a wall-hung boiler controller. The display part adopts a circular liquid crystal display, and the operation part adopts multi-button operation, which has the characteristics of simple and convenient operation. The gas volume regulation part adopts the stepped proportional regulation valve opening, which saves energy more than ordinary wall-hung boilers. Supports on/off type water flow switch and pulse type water flow switch; supports on/off type pressure switch and sensor type pressure switch; supports line control operation and room thermostat linkage control function, which is widely used in various high-end wall-hung boiler control systems.