Blue 16mm momentary push button switch, model R16503. This single unit is supplied as 1 piece with no lighting and two terminals for simple wiring, designed for panelmounted control applications. Key benefits Momentary action for precise control: press activates the circuit while held, and the button returns to its default state when released. Clear visual cue: blue button provides easy visibility in control panels and enclosures. Compact 16mm diameter: fits in spaceconstrained panels without crowding other controls. No illumination required: low power draw and straightforward wiring, ideal where lighting is unnecessary. Simple wiring with 2pin terminals: quick installation and reliable electrical connection. Suitable for panelmount installations: designed to fit standard 16mm mounting applications. Key attributes Function: momentary push button switch Lighting: no lighting (no builtin illumination) Terminals: 2pin Diameter: 16 mm Color: blue Model: R16503 Quantity: 1 piece Material: not specified in the listing Actuation: momentary (returns to default off state when released) Mounting: panelmount design (intended for 16 mm panel holes) Compatibility and usage notes Designed for panelmounted control panels that use a 16 mm hole. Provides a simple 2pin wiring interface suitable for basic control circuits and signal inputs. Ideal for applications where a tactile momentary input is required without integrated lighting. Usage scenarios Start or reset button on small machinery, test rigs, or hobby electronics projects. Momentary input for microcontrollerbased panels, enabling userinitiated actions without continuous power draw. Input control on arcade cabinets, DIY dashboards, or educational electronics kits where a clear blue tactile button is preferred. Care and installation tips Verify the panel cutout is 16 mm before installation. Connect the two terminals securely to ensure reliable actuation. Ensure there is no binding or obstruction that could impede smooth button travel. Avoid excessive force or harsh handling to maintain longterm performance. Package contents 1 piece of blue 16mm momentary push button switch, model R16503, no lighting, 2pin terminals. Note: Material specifications are not provided in the listing. For results, refer to the supplier's datasheet or product page for detailed material and electrical ratings before use in a specific application.