Constant current output Wide operating voltage (3.5V - 12V) The ALC circuit does not need a socket diode or transistor Brightness level can be adjusted Circuit board with military grade 1.6MM FR4 plate The parameters of the components are printed directly on the of the PCB, without reference to the for case of the circuit can be directly welded, very convenient. The solder-treated solder pads are easier to solder PCB size: about 3.90*1.80cm/1.54"*0.71" Parts Shipping List: 1x PCB board 2 x XH2.54-2P bending seat 2x XH2.54-2P line 1x 100 ohm resistance 1x 10K resistance 1x 2.2UF electrolytic capacitor 1x 10UF electrolytic capacitor 1x Blue with white potentiometer 1x KA2284 chip 5x 5MM green LED 5 1x 5MM red LED Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package List: 1Set x DIY Kit