R16-503AD 16mm round red light self-locking push button switch with a micro tact key switch. Inching power option. 4-pin ON/OFF. Includes 1-2 pieces. - Key benefits: red LED provides clear on state feedback; self-locking (latching) action reduces accidental toggling; micro tact switch offers precise and reliable actuation; compact 16 mm round form fits standard panels; 4-pin wiring enables straightforward installation. - What it is: a 16 mm round push button switch with red illumination, designed for on/off control and compatible with inching power configurations. - Specifications at a glance: model R16-503AD; red light; self-locking push button; micro tact key switch; 4-pin ON/OFF; inching power option; package includes 1-2 pieces. - Suitable applications: - Control panels for machines or automation equipment requiring a visible on/off indicator. - DIY electronics, robotics, or hobby projects that need a compact push button with LED feedback. - CNC, 3D printer, or laser cutter enclosures where start/stop control with clear status is beneficial.