The GSR solenoid valve is connected to the combustible gas leakage monitoring instrument. When the instrument detects flammable gas leakage, it automatically and quickly closes the main gas supply valve, cuts off the gas supply, and prevents the occurrence of malignant accidents in time. The GSR solenoid valve is connected to the temperature-limiting (or pressure-limiting) safety controller of the thermal equipment. When the temperature or pressure of the detection point in the equipment exceeds the set limit value, the air supply valve will be closed automatically and quickly to stop the fuel supply. The GSR solenoid is connected to the central fire leakage instrument system of the high-rise building. In case of fire, automatically cut off the gas supply in the building to prevent accidents.