Features Mini size, portable and lightweight, high power, easy to use. High-power SCR voltage regulator, stepless regulation, help to adjust speed, temperature, voltage and light. Adopt high temperature resistant FR-4 circuit board, original imported SCR chip, all-aluminum thermal fin, precision resistor with high voltage condenser. No delay or delay, with peak voltage absorption circuit, can effectively protect the high-power SCR. Anti-surge, anti-spike, RC absorption and multiple protection. Flame retardant insulating outer shell, high temperature resistant, anti-rust, anti-high pressure and with high durability. Adopt multi-functional industrial sockets, thicken copper parts design, with fine contact and safety. Humanized installation hole design, keep 1 place or hang on it is decided by yourself. Quiet work, energy saving, stable anti-noise and with wide range of use. Suitable for heating tube, electric furnace, tungsten lamp, small motor, electric iron and electric drills, etc. Executive standard: GB 14536.1-2008 Specification Product name digital display electronic speed controller EU plug Input voltage 220-240V AC Output voltage 0-220V AC Maximum power 4000W Load power 2000W Maximum current 15A (15A is the theoretical value, the actual load 10A activates the load protection.) Load current 10A Product size 120x65x55MM Precautions and instructions for use 1. When the machine is empty, the measured output voltage is a virtual voltage, and a load greater than 20W must be connected to measure the correct output voltage (attention must first charge and then adjust the voltage). 2. Please use within the rated power and voltage range, only suitable for AC grid. 3. The above 4000W refers to the limit power when working in a resistive load. The inductive load accounts for 1/3 of the resistive load. The resistive load refers to the tungsten filament lamp, heating wire, etc. and the inductive load refers to the series motor. And so on, there are electronic circuit board products used with caution. 4. It is normal that there is a slight heat during work. Please use it in a dry and ventilated place. 5. This product is a flame-retardant plastic shell that must be safely grounded. the power outlet must be grounded. 6. The machine is not suitable for operation with a soft-start or slow-start voltage regulator.