Dumping and power-off protection The heater will stop working when it is accidentally emptied, and it will be turned off to prevent collision and leakage, and it is safer to use < / p> Air circulation, can be used in all four seasons one machine can be used for multiple purposes, spring, summer, autumn and winter can be used, convenient and economical Wide angle and wide range heating It can not only supply air from left to right, but also adjust it from top to bottom. It is convenient for heating. The warm air can be diffused in all directions and the whole family can share the heat with one machine. Quadruple safety protection no open flame operation, safety grille, flame retardant material, protection against overheating and power failure Customer Service Hope you can enjoy a pleasant shopping experience.