features:<br />1. special design with 1.6 thick - 4 high temperature resistant circuit board・ it is safety and reliable to cope with large current.<br />2. double capacity design:safety capacitor and metal film capacitor to protect scr more effective and efficiency .<br />3. 1.5 thick aluminum and stainless steel case・ more suitable for family temperature control or speed control and industrial enterprises to use.<br />4. good quality・ it will not rust after long time using.<br /><br />specification:<br />working voltage: ac 220v<br />max power: 4000w resistive load<br />efficiency: 90%<br />working voltage: ac 220v<br />regulation voltage: ac 10-220v<br />dimensions: 91 x 59do not include knob x 34mm<br />module weight: about 150g<br /><br />package included:<br />100% <br />1x 4000w ac110v 220v high power scr electronic volt regulator