It has a convenient concentration switch that can be turned on and off without having to remove the cord. When the total usage capacity exceeds 1500W, the built-in breaker will start and the power will be off. The plug has an insulated cover to prevent tracking fires caused by dust and moisture. Comes with a safety shutter to prevent dust from entering. The lightning surge filter protects your connected devices from overvoltage such as thunderneath. The swing plug moves 180° to allow wiring in narrow spaces.