Speed controller 230 V: the input is AC 220-240 V, the output is 0-220 V AC, with real-time display of the output voltage, so that the operating voltage of the machine is clearly visible at a glance. 15A overload protection: when the momentary current exceeds 15A, the switch automatically turns off to protect the controller, with an internal indicator light. High performance: the speed controller peak power 4000 W, the maximum power of the connection power of the ohmic load must not exceed 2000 W, the maximum power of the inductive load must not exceed 500 W, the maximum power of the capacitive load must not exceed 300 W, otherwise the product may be damaged. 【Multifunction】This voltage regulator has practical functions such as speed control, voltage control, temperature control and light dimming. It is suitable for speed control of fans, motors, power tools, temperature control of ovens and for lighting control of incandescent lamps. PC plastic housing: the housing of the speed controller is made of excellent PC plastic with high temperature resistance, wear resistance, which is safe and flame retardant.