Features: _x000D_ 1. 100% brand new and high quality _x000D_ 2. Made of high quality material, durable and long service life. _x000D_ 3. It is 0 lag and 0 delay with stable performance _x000D_ 4. It has anti-surge, anti-spike, RC absorption multiple protecting function. _x000D_ 5. Used in household appliances, industrial appliances, scientific test equipment, factories, school electrical equipment, etc. _x000D_ _x000D_ Specification: _x000D_ Condition: 100% Brand New _x000D_ Input Voltage: AC220V _x000D_ Output Voltage: 0~220V adjustable (output voltage is less than input voltage) _x000D_ Maximum Power: 4000W (when inputting 220V) _x000D_ Voltage Regulation Range: 0~220V infinitely adjustable (with load) _x000D_ Rated Current: 9A _x000D_ Maximum Current: 18A _x000D_ SCR Model: STMicroelectronics; Thyristor BTA41-600B/800B _x000D_ _x000D_ Package List: _x000D_ 1 * Thyristor Electronic Voltage Regulator _x000D_ _x000D_ Note: _x000D_ 1. When the load is idling, the output voltage is the same as the input voltage. It must be connected to a load of 10W or more to measure the output voltage. _x000D_ 2. Input AC power, the output is also AC, not DC _x000D_ 3. The above mentioned 4000W refers to the power when working under resistive load, and the inductive load is 1/3 of the resistive load. The resistive load refers to the electric lamp, the heating wire, etc; the inductive load refers to the series excitation motor; Do not use electronic smart products with caution _x000D_ 4. Metal enclosure electrical appliances, please safety grounding