Features 1、This is a easy-to use voltage regulator for controlling light brightness or speed. 2、Designed with large heat sink for better heat dissipation. 3、Convenient to use, simple connection and rotate knob to control voltage. 4、The voltage regulator could control light brightness, speed, temperature. 5、Widely used for resistance load such as heating wire, filament lamp and most(not all) single-phase AC motors. Specification Features: This is a easy-to use voltage regulator for controlling light brightness or speed. Designed with large heat sink for better heat dissipation. Widely used for resistance load such as heating wire, filament 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 in 3000W) Efficiency: >90% Size: Approx. 130 x 60 x 47mm / 5.1 x 2.4 x 1.9in Weight: 195g / 6.9oz (approx.) Package list: Note: 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. Package List