High performance: Use powerful scR as internal chip. Achieve stepless voltage setting with a button. No hysteresis, no delay, quick response.Thickened metal cover: the product is the metal upper thickened material, high temperature, anti-flame, no rust; design of a compact and light product, five-sided cooling, no heat, no deformation, safe and durable.Multiple protection: effectively protect powerful hyristors from overvoltage, voltage surges and RC absorption of multiple protection.Wide use: this product is equipped with a universal multifunctional socket and a power indicator, infinitely adjustable voltage regulator. It is used for dimming electric furnaces, water heaters, small motor speed, electric temperature and iron.Note: The output is AC, not DC. This product has a metal sheath and must be securely grounded. The measured output voltage is a virtual voltage without load. It must be connected to a load of 20 W or more to measure the correct output voltage.Achieve a stepless voltage setting with a button. Zero hysteresis, zero delay, quick response. The shell is equipped with a universal multifunctional outlet.Specifications:Input voltage: AC220VPlug type: EU plug.4000 W. Voltage regulator:Output voltage: 0-220 V infinitely adjustable (the voltmeter does not work if the output voltage is below 5 V).Maximum power: 4000 W (suitable for ohmic loads from 2000 W to 3000 W).Rated current: 9A10000 W. Voltage regulator:Output voltage: 0-220 V infinitely adjustable (the voltmeter does not work if the output voltage is below 5 V).Maximum power: 10000 W (suitable for ohmic loads from 2000 W to 4000 W).Rated current: 15 A.Box contents:1 x SCR voltage regulator.Note:1. The measured output voltage is a virtual voltage without load. It must be connected to a load of 20 W or more to measure the correct output voltage.2. This product has a metal cover and must be securely grounded. The output is AC, not DC.