Package included:  
       1*Voltage Regulator  
          
       Specification:  
       Product name: AC 220V 4000W Variable Voltage Regulator   
       Material: Metal shell  
       Size: 11.5*10*6cm/ 4.5*3.9*2.4inch(Approx.)  
       Weight: approx.500g  
       Input Voltage: AC 220V  
       Output Voltage: 0~220V (Adjustable)  
       Adjustable Voltage Range: 0~220V  
       Max Power: 4000W  
       Rated Current: 9A  
       Max. Current: 18A  
          
       Features:  
          
       Core chip adopts high power thyristor  
       With adjustable knob for stepless voltage regulation  
       No delay, anti-surge, anti-spike, RC absorption multiple protection  
       With universal power socket and power supply light  
       With heat dissipation port for fast heat dissipation            4000W High-power Motor Fan Variable Thyristor Electronic Voltage Regulator Controller   
         Adopts metal shell structure, high temperature resistance, flame retardant, not easy to rust   
                   Tips:            Precautions and instructions for use   
         1. When measuring the output voltage when it is empty, it is a virtual voltage. It must be connected to a load of 20W or more to measure the correct output voltage.   
         2. Input AC power, the output is also AC, not DC.   
         3. The above mentioned 4000W refers to the ulti  mate power when working under resistive load.   
         The inductive load is 1/3 of the resistive load. The resistive load means that the inductive load such as a tungsten filament lamp or a heating wire is a series-excited motor, etc., and the circuit board electronic products are used with caution.   
         4. This product is a metal case and must be grounded safely.