The R16503 Blue SelfLocking 16mm Latching Push Button Switch is a panelmount, nonilluminated 2pin control switch designed for reliable maintained on/off operation in compact installations. It provides a simple, toggled power control that stays in the selected state until pressed again. Key benefits Maintained on/off action: the selflocking latch prevents accidental toggling and keeps the circuit in the desired state until the next press. 16mm panel size: compact footprint suitable for spaceconstrained control panels. Clear visual identification: blue push button aids quick recognition in multibutton layouts. Simple wiring: 2pin configuration supports straightforward connections for standard SPSTstyle circuits. No lighting: nonilluminated design avoids extra power usage and heat from indicators. Model consistency: part number R16503 provides a clear reference for replacement and compatibility. Specifications Type: Latching push button switch (selflocking) Illumination: No lighting Termination: 2pin Panel mounting size: 16mm Color: Blue Quantity included: 1 piece Model: R16503 Applications Control panels for industrial equipment and machinery where a maintained on/off state is needed DIY electronics projects and hobbyist enclosures requiring a kepton push button Prototyping, test rigs, and maintenance panels where a reliable, nonilluminated switch is appropriate Included in the package 1 x R16503 blue selflocking 16mm latching push button switch (2pin, no illumination)