flame retardant metal chassis: high temperature flame retardant not deformed, metal paint does not rust effectively prevent high temperature, anti-heavy pressure, to potential safety hazards! Easy to use, infinitely variable speed adjustment, free control adjustment, no gear restrictions The back of the mounting hole design is very humanized, flat, hanging convenient and free The 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 but also guarantees robust performance under operating conditions. It's an essential upgrade for anyone looking to maintain their appliance in top condition. Power frequency: 50-60HZ Output power: 2000W Rated power: 4000W Rated current: 9A Speed range: 10-220 Plug Type:UK plug,it applies to Malaysia, the United Kingdom and so on. voltage:AC220V Colour:As Shown Material: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.