This 1PC 16MM Momentary Push Button Switch With Red LED lighting, model R16503, provides a compact and versatile control input for panelmounted applications. The 16mm diameter fits standard openings, and the 4pin configuration supports flexible wiring for switch and LED circuits. Key benefits Momentary action for quick, ondemand control that returns to the resting state when released. Red LED lighting offers clear visual feedback, helping users identify when the switch is active or illuminated in lowlight conditions. 4pin design enables versatile wiring options, allowing separate connections for the switch contacts and the LED or for standard control circuits. Small, unobtrusive form factor suitable for compact panels and equipment enclosures. Simple, singlepiece packaging (1 piece) for easy integration into projects and devices. Key attributes Functionality: Momentary push button switch with red LED lighting. Size: 16 mm diameter for standard panel openings. Lighting: Red LED indicator integrated with the switch. Pins: 4pin configuration. Model: R16503. Quantity: 1 piece. Mounting: Panelmount design compatible with 16 mm openings. Applications and use cases Control panels for small machinery or equipment where a momentary input is needed to start or acknowledge an action. Reset or confirmation button in electronics projects, microcontroller builds, or test rigs, where a temporary input plus LED indication improves usability. Interactive interfaces for hobby electronics, arcade cabinets, or DIY home automation projects that require a visible LED cue and a momentary switch action. Notes This description reflects the specification and features of the product as listed: 1PC, 16MM, Momentary Push Button Switch, Red LED lighting, 4Pin, R16503. For exact electrical ratings or installation details, consult the product datasheet or supplier data.