note:   !!!<br />           !!!!!!!!!!!<br /><br />1. and high quality<br />2.maximum power: 5000 w impedance load limit power， when used for a long time， should reduce the power，suggest using impedance load 2500 w.<br />3.effective rate: more than 90%<br />4.working voltage: ac 220 v<br />5.output voltage：0-220v<br />6.application：lamp dimmer，motor speed control，thermostat<br />7.size：85*70*42mm<br /><br />package included：<br />1x scr voltage regulator<br />