AD16 series signal lights, adopting LED lighting chip as light source with long life, low energy consumption and light weight, are ideal products to replace XD type incandescent ad neon lights. AD16-16, AD 16-22, 25 type signal lights, with characteristics of high lightness, reliability, beautiful construct, exquisite making, etc, which make us enjoy good-mouth. In order to satisfy increasing requeirement to product quality and aesthetics, we also developed. AD 16-22B, AD 16-22D, AD16-22E signal lights, flashing buzzer and ultrashort signal light, and adopted appearance design identical with LA39 series push buttons, with light cover able to be crafted with various international standard marks or specified marks. Light cover adopts polycarbonate with excellent anti-impact ability and screw type line connecting positions are fixed inside, which assure higher safety, convenience and further perfection.