Wide Application: This router speed controller adjusts speed, temperature, voltage, and light, suitable for US standard A and B plugs. Commonly used in exhaust fans, tungsten lamps, electric furnaces, angle grinders, marble machines, and fans.High Accuracy Display: The rheostat variable speed controller features a precise pressure adjustment knob, offering high accuracy. Easily monitor the machine's working voltage through the digital display.Flexible Adjustment: The fan speed regulator offers stepless speed regulation, easily switching according to actual conditions. Apply to more appliances and control them with ease.Multiple Protection: Features a 15A overload protection switch with independent switch control input, output voltage, overload, and short circuit protection, replacing boat switches and fuses.Back Hook Design: A hook is specially designed on the back of the regulator to facilitate the operation of the angle grinder. Hang it on the regulator's tool kit for easy carrying and convenient use. Simply plug and play for simple and practical operation.Item Type: Fan Speed ControllerPlug Specification: US Plug 100-120VInput: 100~120VOutput: 0~120VSpeed Control Mode: Stepless Speed ControlMaximum Input Current: 15AMaximum Input Power: 4000WPackage Includes:1 x Fan Speed Controller