Binay Opto Electronics Private Ltd. Manufactures Integral LED Indicators for 12.5mm Panel Cutout. Binay Opto Electronics Private Ltd. Binay Opto Electronics Private Ltd. Also offers LED based pilot lights, aviation obstruction lights, alarm lights, etc. Integral LED Indicators for 12.5mm Panel Cutout has plated brass body of diameter 12mm. These are available integrally in all voltage ratings up to 220V in AC or DC. This is also available in a single 10mm LED form. The input cable termination has screw terminals, solderable lugs, 150 mm [6"] flying leads, or pin/socket terminals.