This is a kind of fine quality high power SCR voltage regulator, stepless regulation, help adjust speed, temperature, voltage and light. Adopt hightemperature resistant FR4 circuit board, origin imported chip SCR, full aluminum thermal fin, precisions resistance with high voltage condenser. Separate switch control, freely control the input power and cut off power. No postpone and no delay, with crest voltage absorb circuit, can protect the high power SCR effectively. You can have a try.FeaturesMini size, portable and lightweight, strong power, easy to use.High power SCR voltage regulator, stepless regulation, help adjust speed, temperature, voltage and light.Adopt hightemperature resistant FR4 circuit board, origin imported chip SCR, full aluminum thermal fin, precisions resistance with high voltage condenser.Separate switch control, freely control the input power and cut off power.No postpone and no delay, with crest voltage absorb circuit, can protect the high power SCR effectively.Anti surge, antispike, RC absorb and multiple protection.Flame retardant insulation outshell, high temperature resistant, rustproof, anti high pressure and with fine durability.Adopt multi functional industrial sockets, thicken copper part design, with fine contact and safety.Humanized installation hole design, keep flat place or hanging on it is decided by yourself.Silent work, energy saving, stable antinoise, and with wide range of use.Suitable for electrical components, such as electric stove, water heater, heat transfer lamp dimming, small motor, electric soldering temperature and etc..NotesWhen 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.Input AC power, the output is also AC, not DC.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 seriesexcited motor, etc., and the circuit board electronic products are used with caution.This product is a metal case and must be grounded safely.SpecificationsName SCR Voltage RegulatorModel NHT4000WMaterial aluminumColor blackInput voltage AC 220 VOutput voltage 0220 VMax power 4000WVoltage adjusting range 0220 VRated current 9AMax current 18AMain machine size 115 * 100 * 83mm / 53 * 94 * 27inItem weight 459g / 01lbPackage size 180 * 100 * 115mm / 7.09 * 94 * 53inPackage weight 522g / 15lbPackage list1 * SCR Voltage RegulatorShippingWe guarantee to ship goods out within 2472 hour after payment confirmation except holiday.We ship by China post,HKpost EMS,DHL,Fedex,according to your choice when placing orders .If you didn't receive the item after 45 days,please feel free to contact us.We will make all our effort to resolve the problem.WarrantyAll items have 1 year guarantee.IF your purchase do not meet merchantable quality, fitness for purpose or match the , We can make sure your issues are resolved .For wronglyshipped items, Please contact us in 48 hours after delivery.We will arrange to deliver the correct items or return all your payment.For defective or faulty products,please take photos or videos,we would resend or refund after confirmation.