This product is AC voltage 220V input, AC output, can only step down, connected to the load in order to regulate the voltage, no-load connected to the multimeter is useless, not a transformer, please buyers read all the instructions on the product page and then decide whether to order!

The 4000w of this product refers to the instant over 4000w, long time use do not exceed 2000w.

Maximum power: 2000W (resistive load limit power), long time should reduce the power to use. (Recommended load 1500W power)

Voltage interface terminal cover 1 2 for input 3 4 for output

Note that the load must be connected before regulating the voltage.

Thyristor is mainly used for resistive loads (electric filament incandescent lamps, etc.), most of the single-phase AC motors can also be, but does not guarantee that all can be, and other types of loads, please buyers to confirm their own. Fuse is not universal, there is a reaction time, if the current is too high, in addition to burning the fuse, the module may also burn out. Please use the product within the specified voltage and power.

Note that the plastic cover on the connector due to the installation of the shell, can not be completely lifted, the screwdriver should be biased point screwing, in addition to lift carefully, too much force is easy to break the cover!