What is a cold light fire extinguisher and its precautions-302 cold light fire extinguisher is used to put out the first fires of Class A, Class B and Class D, and can be widely used in hotels, restaurants, warehouses, office buildings, schools, hospitals, dance halls, gas stations, theaters, shopping malls, computer rooms, cars, families and so on. When using, please be close to the ignition point, unplug the safety pin, aim the nozzle at the root of the flame, press the handle, and the fire extinguishing agent can be sprayed out to extinguish the fire (to extinguish the liquid fire, the fire extinguishing agent cannot be directly sprayed into the center of flammable liquid). Maintenance: the fire extinguisher should be placed in a clean and dry place, and it is forbidden to expose to the sun and get close to the fire source; Check the pressure gauge of the fire extinguisher regularly. When the pressure gauge pointer is lower than the green line area, it should be pressurized for maintenance immediately. The fire extinguisher shall be properly kept, and it is forbidden to dismantle it at will.