flame retardant metal chassis: high temperature flame retardant not deformed, metal paint does not rust effectively prevent high temperature, anti-heavy pressure, to eliminate potential safety hazards!Easy to use, infinitely variable speed adjustment, free control adjustment, no gear restrictionsThe back of the mounting hole design is very humanized, flat, hanging convenient and freeThe product can be widely used in household appliances, industrial appliances, scientific experimental inst ents, factories, schools and other electrical equipment.Premium Construction: Made with high-grade materials, this part not only promises longevity but also guarantees robust performance under various operating conditions. It's an essential upgrade for anyone looking to maintain their appliance in top condition. Power frequency: 50-60HZOutput power: 2000WRated power: 4000WRated current: 9ASpeed range: 10-220Plug Type:UK plug,it applies to Malaysia, the United Kingdom and so on.voltage:AC220VColour:As ShownMaterial:Metal Package Contents:1 * 4000W Voltage Controller Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.