The AH165-TLR11E3 is an oil-tight illuminated pushbutton switch from Fuji Electric's 16 mm compact series, featuring a flush rectangular head operator with momentary action and 1NO+1NC contact configuration. The device is equipped with a flat LED lamp rated at 24V DC, providing reliable visual indication in industrial control applications. With its oil-tight (IP65) design, the switch is well-suited for harsh environments including solid-state and electronic circuits. The compact finger-size form factor minimizes panel space while maintaining a smooth snap-action mechanism and highly reliable operation. Contact blocks are easily removable and replaceable without special tools, facilitating quick maintenance and customization. This switch is ideal for machine control panels, process automation, and equipment requiring both switching functionality and illuminated status indication in demanding industrial settings.