The AH165-ZTRE3 is an oil-tight pilot light featuring a dome lens design with red/green LED illumination, rated for 24V DC operation. This component is part of Fuji Electric's Command Switches series, designed for use in machine tools, industrial machines, control panels, and instrumentation panels. The oil-tight construction (IP65 rating) provides enhanced protection against harsh industrial environments, making it suitable for applications requiring reliable visual indication in demanding conditions. The red/green LED capability allows for dual-state indication, improving operator feedback and system monitoring. Panel mounting is straightforward with standard washer and nut fastening, accommodating panel thicknesses up to 5 mm maximum.