Features:
Special design with 1.6 thick FR - 4 high temperature resistant circuit board.   
It is safety and reliable to cope with large current.   

Double capacity design: Safety capacitor and Metal film capacitor to protect SCR more effective.More efficiency and more safety.1.5 thick aluminum and stainless steel case, more suitable for family temperature control or speed control and industrial enterprises to use.   
Beautiful and easy, safe, convenient, high quality products.   
It will not rust after long time using.Mainly fit for the resistive loads, eg. lights.   
It also works with the single phase brushed motor which the max power can NOT be over the 1/3 of 40000W.   

Specifications:
Voltage range:10V-220Vmaximum   
power: 4000w   
Net Weight: 41.8g   
Working voltage: AC 220V   
Radiator fin size: 48 x 35 x 30mm   

Package included:
1 x 4000W AC 220V SCR Voltage Regulator