<ul><li>Zero-crossing technology for avoiding<br>disturbance and enhancing dimming preciseness</li><li>4 channel chaser controller</li><li>speed control fast &amp; slow fuction</li><li>3000W output per channel</li><li>2 chaser program</li><li>Sound active chaser controller</li><li>Voltage : 220V</li><li>4 channel dimmer chaser<br></li></ul>