Binay Opto Electronics Private Ltd. Manufactures LED Indicators with Polycarbonate Lens. Binay Opto Electronics Private Ltd. Binay Opto Electronics Private Ltd. Also offers LED based pilot lights, aviation obstruction lights, alarm lights, etc. LED Indicators with Polycarbonate Lens or PRIMARY SERIES Jumbo LED Modules provide a basic and reliable indication. The body is made of industrial quality flame-retardant thermoplastic compound. The polycarbonate lens is mounted directly on the body. Industrial-grade LEDs and components are utilized for reliable light service. The LED Indicators with Polycarbonate Lens are available for 22.5mm, 25.5mm, and 30.5mm panel cutouts. They are also available in variable sizes having the diameters of 22.5mm, 25.5mm, 27.5mm, 30.5mm, and 19.5mm respectively. Each indicator under-goes ageing procedure for 12 hours at an accelerated voltage of 250V.