Earldom SC04 Power Socket Handle A Situation With Ease Zinc Oxide varistor (MOV) Fast blocking high voltage (instantaneously starts and absorbs lightning voltage), and controls the remaining voltage value in the safe range. Ceramic gas discharge tube (GDT) Effective isolation of strong current can effectively absorb excess current and connect the current to the ground wire, so as to solve the hidden trouble of high current. Hightemperature fuse protector Completely cut off the ultra high temperature. The high temperature fuse protector of lightning protector is made of fusible metal with low melting point. Once the induced temperature is too high, it will fuse itself quickly and ensure the safety of household appliances.