【Good cooling effect】AC Voltage Controller designed with large heat sink for better heat dissipation. 【Easy to use】Simple connection and rotate knob to control voltage, Speed Temperature Controller is convenient to use. 【Easy control】The Electric Voltage Regulator could control light brightness, speed, temperature. 【Wide range of applications】AC Motor Speed ​​Controller is widely used for resistance load such as heating wire, filament lamp and most(not all) single-phase AC motors. 【Package list】1 * Voltage Controller, SCR Model: BTA41600B, Voltage Controller's Max. Power: 6000W (max. power for resistive load. For long time use, please keep it in 3000W), Efficiency: >90%, Working Voltage: AC 220V, Adjusting Voltage: AC 0~220V (for resistive load, the voltage may not be 0V at first, you can turn it back to 0V), Size: 130*60*47mm / 5.1*2.4*1.9in, Weight: 195g / 6.9oz (approx.), Manufacturer: Regun