AC 220V 4000W High Power SCR Speed Controller Electronic Voltage Regulator Gover

Adopts double insulation, there will be no electric leakage if short-circuit or SCR burn out. Can prevent for peak voltage and electrical surge, RC absorption and fuse enhance usage safety. Aluminum for case prevents it from easy damage, filled tin prevents it from heating when in huge current. AC 220V4000W High Power SCR Speed Controller Electronic Voltage Regulator Gover. Features: Adopts double insulation, there will be no electric leakage if short-circuit or SCR burn out. Can prevent for peak voltage and electrical surge, RC absorption and fuse enhance usage safety. Aluminum for case prevents it from easy damage, filled tin prevents it from heating when in huge current. With protective cap and connection post, thicker and larger heat sink. Wide application: electric furnace, water heater, lamps, small motor, electric iron etc. How to use: Adjustable Power Supply Board, connect this device with lamp or home appliance or electric circuit, then rotate the knob for dimming, speed, volt