Xcsource 4000W AC 110V 220V SCR Voltage Regulator Motor Speed Controller Electronic Dimmer Thermostat Governing TE474 This controller uses novel bi-directional high-power SCR. It can be convenient adjust current up to 25A, solve the over current problem of the heating wire. The output voltage is adjusted anywhere between 0V ~ 220V for use with electrical appliances. It can use to such as electric stove, water heater tune thermal, lighting dimmer, etc. It can achieve dimming, thermostats, pressure regulator effect.