This is a kind of fine quality surge protecting device, fire proof and corrosion-resistant, prevents home electric network receive excessive impact while lightening. Working status indicating window, green means normal and red means failure, which can effectively react the working status in time. Detachable installation design, the base is reusable, help reduce the maintenance cost. You can have a try. Features: This is a kind of fine quality surge protecting device, fire proof and corrosion-resistant. Plug-in design, support hot-line operation, simple and easy to use. Working status indicating window, green means normal and red means failure, which can effectively react the working status in time. Surge protections, prevents home electric network receive excessive impact while lightening. Detachable 35mm Din rail installation design, the base is reusable, help reduce the maintenance cost. Insulation connecting terminal, more reliable and more safety. Quickly react speed with strong bearing capacity. Specifications: Name: Surge Protector Imax: 40kA In: 20kA UP: 1.8kV Uc: 385V Frequency: 50Hz, IP20 Working temperature: -40 celsius to 80 celsius Item size: 73 * 90 * 63mm / 2.87 * 3.54 * 2.48in Item weight: 378g / 13.33ounce Package size: 75 * 95 * 65mm / 2.95 * 3.74 * 2.56in Package weight: 395g / 13.93ounce Package List: 1 * Surge Protector