FUNCTION: The voltage regulator can control the brightness, speed and temperature of the lamp ADJUSTMENT: The voltage regulator is adjusted by a knob, which is much more stable than a powerful iometer PARAMETERS: Maximum. Power: 6000W (the maximum power of the resistive load. For long-term use, please keep it at 3000W); Working voltage: AC 220V; Regulating voltage: AC 0~220V (for resistive loads, the initial voltage may not be 0V, but it can be adjusted to 0V) WIDE APPLICATION: This speed controller is widely used in resistive loads, such as heating wires, incandescent lamps, and most (not all) single-phase AC motors NOTE: This product needs to apply a load first to adjust the voltage Features: This is an easy-to-use voltage regulator for controlling the brightness or speed of the light. Designed with a large heat sink for better heat dissipation. Convenient to use, simple connection and turn the knob for controlling voltage. The voltage regulator can control the brightness, speed, and temperature of the light. Widely used for resistance loads such as heating wire, incandescent lamp and most (not all) single-phase AC motors. Specification: SCR Model: BTA41600B Max. Power: 6000W (Max. power for resistive load. For long-time use, please keep it at 3000W) Efficiency: > 90% Working Voltage: AC 220V Voltage Adjustment: AC 0~220V (For resistive load, the voltage may not be 0V at first, you can adjust it back to 0V) Size: Approx. 130 x 60 x 47 mm / 5.1 x 2.4 x 1.9 in Weight: 195 g Package List: 1 x Voltage Controller Note: Please connect to charge first, then adjust the voltage. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.