ITEM NAME:4000W AC 220V Voltage Regulator Motor Speed Controller Fan Thermostat Dimme U9F5 4000W AC 220V Voltage Regulator Motor Speed Controller Fan Thermostat Dimme U9F5 Brand new and high quality Maximum Power: 4000W Output voltage: 0-220V(Can adjust potentiometer output to be 0V) Voltage Regulation: AC 0-220V, after opening SCR adjust from about 10V Max current:20A Size: Approx. 85x 60 x45mm (L*W*H)/3.35 x 2.36 x 1.77 inch Protection: Anti-spike, Surge, RC absorption (EOC) Adopts high quality SCR,Advanced circuit design Aluminum shell,difficult to be crashed, and can protect people from mistakenly electric shock The input is connected with AC 220V, output is connected to the electric stove wire or motor appliances, then rotate the knob for speed, voltage, temperature control. With fan,under ambient temperature is not high and adequate ventilation.Maximum Power: 4000W. Adopts high quality SCR,Advanced circuit design. colour:silver&black.