> This is a kind of beautiful SCR voltage power regulator, worry-free regulation, help adjust speed, temperature, voltage and light. Adopt high temperature resistant FR-4 circuit board, original imported SCR chip, full thermal aluminum fins, with precision high voltage capacitor resistance. Separate switch control, freely control the input power and cut off the power. No delay and postponement, with peak voltage absorb circuit, can protect the high power SCR effective. You can try. Specifications: Name: SCR voltage regulator Model: NHT -4000W Material: aluminum Color black Note: The data are all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.