The R16503 is a 1 piece self locking 16mm latching push button switch with red LED lighting. Designed for dependable on/off control, its selflocking action latches the switch in the on position until it is pressed again to unlatch. The builtin red LED provides a clear visual indicator when the switch is active, improving visibility in any control panel. Key features and attributes Mounting size: 16 mm panel cutout for standard control panels Configuration: 4pin arrangement Function: Selflocking (latching) push button switch Indicator: Red LED lighting for easy status visibility Model: R16503 Quantity: 1 piece Benefits Reliable latching action reduces accidental toggling during operation Integrated red LED offers immediate onstate indication Compact 16 mm footprint fits most standard panels and spaceconstrained installations Simple wiring via 4 pins supports both switch control and LED illumination Compatibility and applications Suitable for control panels, equipment enclosures, and DIY electronics Ideal for start/stop controls, power toggles, or status indicators in machines and projects Works well in arcade cabinets, industrial controllers, and hobby electronics enclosures where a visible on/off indicator is beneficial Use cases Machine control panel: provides a clear on/off toggle with activestate illumination Enclosures and cabinets: serves as a prominent power switch with builtin status indicator DIY electronics or arcade projects: compact, panelmounted control with visible red LED feedback Notes Model and features align with the stated specification: 1PC self locking 16MM latching push button switch with red LED lighting and 4Pin configuration, model R16503 Material and electrical ratings are not specified in the product details provided. This description reflects the stated attributes and intended applications based on the model features.