✔️【10000 Joule Surge Protector】MICHIC upgraded RV surge protector 30 amp can display the voltage in real time, provide protection for your RV, prevent electrical interference and surges caused by weather from damaging your RV and incurring high repair costs. ✔️【Poor Voltage Indication】Our smart surge protector can continuously detect whether your voltage is safe during your use. When "E1" is displayed on the display, it proves that your voltage is lower than 104V, and when "E2" is displayed, it proves that your voltage is higher than 132V, which can eliminate the problem power supply for you in advance. ✔️【Quality Improvement】This rv 30 amp surge protector has passed various strict standards to provide you with a high-quality charging environment. When the temperature is higher than 230°F, an alarm will sound, and when it is higher than 140°F, the device will be reset. It is also equipped with an anti-theft cable lock to ensure that your surge protector will not be lost. ✔️【Extra-Large Waterproof Cover】This RV surge protector 30 amp waterproof has maximized the compatibility of the waterproof cover, which is suitable for RV power plugs of various sizes, ensuring normal use in different harsh environments. ✔️【Easy To Use】The shell of the our 30 amp RV surge protector is fireproof and waterproof, and the handle is ergonomically designed for easy plugging and unplugging. If you have any questions, we will reply you within 24 hours. MICHIC 30 Amp RV Surge Protector