The use of new two-way high-power thyristor, because the current up to 40 amps, a good solution to the electric furnace wire in the case of cooling resistance is too small to cause over-current problems; can easily adjust the mains output voltage, at 0-100% (220 volts sub-100 level adjustment, non-linear) between the arbitrary adjustment for the use of electrical appliances. Such as: electric furnace, water heaters, heating, lighting dimming, small motor speed, electric iron thermostat. In order to achieve dimming, tempering, regulating the effect. Large electric appliances that can be used for electric power less than 2000 watts Due to the large power, the average home electric appliances or small factories are enough.(This regulator is equipped with two-way high-power thyristor, can be used without any additional components, very convenient and practical). Comes with heat sink, the buyer can get the hand can be usedBrand newColor: silverMaterial: metalSize: 7.3*5.9cmMaximum power: 4000 W (resistive load connected)Voltage regulation: AC 0-220 V, starts from AC 10 VProtection: anti-peak, surge, RC absorption (EOC)Stable and durable.Used in electric furnace, water heater, lamps, small motor, electric iron etc.How to Use: The input is connected with the AC 220V.Output wire is connected to the electric cooker or appliance motor.Turn the knob for speed, voltage, temperature control.Note: Charge does not exceed the maximum power, otherwise it will burn the module and electrical appliances; Use the resistive load as much as possible; Reduce the capacitive and inductive load of much energy. (It is best to leave more than half of them).Please allow 1-5mm errors due to manual measurement.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.Package included: 1 x Voltage Regulator1 x Power RegulatorOnly the above package content, other products are not included.Note: Light shooting 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.About UsWe provide the good product with the best price,we support Wholesale/Drop Shipping Order1. For Drop Shipping order, please remark"dropshipping order", we will prioritize it.2. For Wholesale/Drop Shipping orders, if you have any ideas about the price or package,please contact us in advance,we will give you the best service to satisfy your demands.About Shipments1.We will send out the orders ASAP once your payment is completed normally.2.Please write your complete delivery address with correct phone number and zip code, especially please confirm your full name.About After-sale ServiceWe are reliable seller and we have our professional after-sale service for all of our customs. If there is any question about the order,please contact us in advance ,we will always here until you get a happy answer.About Feedback1. Please check the package and item when you get carefully to make sure there is no problem.2. If you have any problem or are not entirely satisfied with your package,please don’t be hesitate to contact us first before leaving negative feedback. We will resolve the problem to satisfy you.3. If there is no problem, please leave us five star positive feedback.Your affirmation is our greatest motivation ! ! !