The IDEC HW1L-A4F20QDG240 is an illuminated 40mm mushroom pushbutton featuring a green lens for clear visibility. It offers maintained operation and includes two normally open (NO) contacts for reliable switching. The flush operator design and alternate action functionality ensure ease of use, while the durable plastic bezel provides a robust interface suitable for various industrial applications. This pushbutton is designed to facilitate intuitive operation and quick identification in control systems.