657-1435-303F is a bi-color watertight LED panel mount indicator featuring a flat polycarbonate lens with green and yellow LED color options. The indicator operates at 10-30 VDC with no resistor required, delivering typical light intensities of 515 mcd for green and 310 mcd for yellow. It features a durable polycarbonate housing (UL 94V-0) with a neoprene gasket, 11/16-27 NS threads, and three lead wires for bi-color operation, with a 6-inch wire lead length. The unit is rated for NEMA 4X and IP67 protection, operates across -40°C to +85°C, and mounts through a 0.687-inch hole with maximum panel thickness of 0.350 inches. This indicator is ideal for aircraft, military vehicles, industrial panels, boats, heavy-duty vehicles, and EV charging applications where reliable visual signaling in wet or corrosive environments is essential.