Applications: Electric furnace, water heater, lamps, small motor, electric iron etc. Attention: Charge does not exceed the maximum power, otherwise it will burn the module and electrical appliances; Use the resistive load as much as possible; Reduce the capacitive and inductive load of much energy. (It is best to leave more than half of them) Protection: Anti-Peak, Surge, RC Absorption (EOC) How to use: The input is connected with the AC 220V, output wire is connected to the electric cooker or appliance motor, turn the knob for speed, voltage, temperature control. Specifications: Operating Voltage: AC 220V Maximum power: 4000 W (resistive load connected) Voltage Regulation: AC 0-220 V, Starts From AC 10V Regulator Size: 8.5x6x3.9cm/3.35x2.36x1.54" LED Panel Size: 7.5x6cm/2.95x2.36" Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the image may not reflect the actual color of the item. Thank you No Retail Package Package Contents: 1 x Voltage Regulator