Description:This controller uses a novel high-power bidirectional SCR. It can be very convenient to adjust the current to 25A,and solve the problem of overcurrent heating wire resistance is too small for cooling causing good. The output voltage is adjustable anywhere between 50V-220V for use with electrical appliances. It can use for such as electric stove, tune thermal boiler, lighting dimmer, small speed motor, iron electric thermostat and achieve dimming, thermostats, pressure regulator effect. Specification:-Power Supply Input Voltage: 110V - 250V AC-Output Voltage: 50V-250V (Output Voltage lt;= Power Supply Input Voltage)-Maximum Output Power: 2000W-Maximum Output Current: 25A-Voltage Regulation Range: 50V-250V AC (Output Voltage lt;= Power Supply Input Voltage)-Operating Environment Temperature:-20C-40C-Size: Approx. 47*35*27mmPackage Included:1pcs x 50-220V 25A AC Motor Speed Controller