Attention:

Load does not exceed the maximum power, otherwise it will burn module and electrical appliances;use the resistive load as far as possible; reduce inductive and capacitive load power greatly. (it is best to leave more than half of them)
Specifications:

Working Voltage: AC 220VMaximum Power: 4000W (connected resistive load)Voltage Regulation:AC 0-220V,Start from AC 10VDimensions: 89(L) x 59(W) x38(H)MM/3.35x2.56x1.5"Protection: Anti-spike, Surge, RC absorption (EOC)

Using Method:

Step 1: Adjustable Power Supply Board.

Step 2: connect this device with lamp or home appliance or electric circuit.

Step 3: then rotate the knob for dimming, speed, voltage, temperature control.
Package includes:
1 x High-power 4000W Voltage Regulator