... Signal channels: 3CH Dimmer method :PWM 3CH power supply amplifier (built-in power supply)Summary:This product is developed according to ... caused by wrong connection among wires,controllers and power supply.3,Auto adaptation of AC80V~265V, 50~60Hz input ... decoration:hotels, shopping malls, squares, restaurants, bars, houses.3,Outdoor decoration: advertising boards, parks, bridges, roads and overpasses ...