Specifications
Product Name: 4000W AC voltage regulator

Size: length: (L*W*H): 75*56*38mm /  3.3 * 2.2 * 1.5 inches,knob hole 6mm.

Maximum power: 4000W (resistive load limit power), long time should be reduced power use. Long time resistance load recommended within 2000.

Efficiency: more than 90%

Working voltage: AC 220V

Adjust the voltage: AC 0-220V
 
Voltage adjustment range: AC 0-220V, Resistive load conditions, starting a dozen volts, callback can be 0
Pay attention
Note that the load must be connected before it can be regulated

SCR is mainly used for resistive load (electric wire incandescent lamp, etc.), single-phase AC motor can 
also be, but not guaranteed can, other types of load, please confirm by yourself

Fuses are not omnipotent, there is reaction time, if the current is too large, in addition to burning the fuse, the module may also burn out.