1. Voltage stabilization: stabilize the voltage, prevent voltage instability, make the electricity consumption stable and balanced, to achieve the energy-saving effect, thus prolonging the service life of electrical appliances. 2. Anti-convex wave device: The product is equipped with an anti-convex device to prevent current convex wave and protect the electrical appliances. 3. Current balance: electronically control capacitors, balance currents and increase the power of electrical products in all directions. 4. Applicable appliances: Suitable for a variety of electrical appliances, washing machines, refrigerators, electric fans, televisions, pumps, stereos, fluorescent lamps, etc. 5. Wide Applications: Wide range of applications, suitable for internet cafes, office buildings, shopping malls, offices, cafes, homes. Item Type: Electricity Saver Box Shell material: ABS Frequency: 50-60Hz Effective load: 30KW Working voltage: 90-250V Scope of application: both for home and commercial use Product Size: Approx. 98 x 58 x 29 mm / 3.9 x 2.3 x 1.1 inch Weight: Approx. 104g / 3.7oz Package List: 1 x Electricity Saver Box 1 x User Manual Just plug into a 90 250V outlet