Item Type: Automatic Voltage Regulator Material: Plastic Mounting Hole Spacing: Approx. 10cm / 3.9in Operating Voltage: 250v Package List 1 x Automatic Voltage Regulator 1Automatic Voltage Regulation: The automatic voltage regulator can stabilize the voltage output to ensure that the equipment operates within the normal operating voltage range. 2Wide Voltage: The automatic voltage regulator is suitable for single phase 220V and three phase 380V voltage, which is suitable for meeting different needs. 3Premium Materials: The voltage stabilizer is made of premium plastic materials to ensure long term durability and reliability, not easy to damage and broken. 4Stable Performance: The regulator can provide stable power output, meet the power supply needs of a variety of electrical equipment, protect equipment from voltage fluctuations. 5Easy to Install and Use: The voltage regulator with simple installation steps and user friendly operation interface, convenient and fast, suitable for all kinds of users.