High quality Voltage Protector Adjustable Over Under Voltage Protector Electric Power Protector Notice * This product has two assorted current values, which might be selected in keeping with your requirements.* The line voltage should not be higher than 330vac to stop the product itself from being broken due to immoderate voltage. Please touch us if a excessive energy supply is required in a particular situation. * If you've got any questions, please touch our visitor service. Product Description