Leakage protector. Because the kitchen floor is wet, the air humidity is high, and there are many gas tanks, it is easy to get an electric shock when it is short-circuited, and the short-circuit spark is more dangerous. Air opening is not as sensitive as leakage protection, and there must be a large short-circuit current when tripping, which is far less than leakage protection. It is better to install more circuits for control and protection respectively.