AH165-2SFLG22E3 is an oil-tight illuminated pushbutton switch manufactured by Fuji Electric, featuring a flush square head operator with a flat LED lamp rated at 24V DC. This momentary action switch provides 2NO+2NC (2 normally open + 2 normally closed) contact configuration, making it suitable for complex multifunctional control applications. The switch operates with 14 mA LED consumption at 24V DC and is designed for panel mounting with a thickness range of 1 to 5 mm. The oil-tight construction ensures reliable performance in harsh industrial environments including machine tools, control panels, and distribution panels, where protection against moisture and contaminants is essential.