24-key IR LED Controller, Input: AC85~265V, Output: DC12V, Control constant-voltage ... Product Description The High-voltage 24-key IR LED Controller Adopts the advanced PWM control technology to control all ... to control the led controller, which has 24 buttons, the function of each button as the table below: Brightness +( 16 ... .Typical Applications: High-voltage 24-key IR LED Controller (3 Channels)