Technical Parameters Category Specification Model A22-IGE1M Product Type Illuminated Pushbutton (Momentary Action) Series A22 Mounting Hole 22 mm Front Bezel Oil-tight, Dust-tight (IP65 rated) Button Type Round, Momentary Button Color Yellow (Actuator) Lens Color Green (Illumination) Illumination Incandescent Bulb Contact Block Not Included. This is only the operator (button and lamp assembly). A separate contact block (e.g., A22-C) must be purchased. Voltage for Lamp Depends on the specific bulb installed (e.g., 6V, 12V, 24V, 48V, 110V, 220V). Must be specified separately.