indicator .dia.16 shape: round,square, rectangle color: red,yellow,green, blue, indicator light LEDDiameter :16mmShape:Y-Round , J-Square , F-RetangleColor:Red,green,yellow,blue Indicator equally uses LED shining chip as light source. Because of long life, low consumption, small volume and light weight, it is a product replacing the older kind of incandescent lamp and indicator of neon lamp.Huawu ...