The R123 ONOFFON Momentary 12mm toggle switch handle switch is a 1piece panel mount device designed for a 12mm opening. It provides a threeposition ONOFFON configuration with a momentary function as specified by the model, making it suitable for applications that require both latching and momentary signaling in a compact form factor. Key benefits Flexible threeposition control: ONOFFON with momentary action allows versatile power or signal routing in a single switch. Compact 12mm mounting size: ideal for crowded control panels, small devices, and compact electronics projects. Simple, tactile operation: supports reliable manual control with a dedicated toggle handle. Pack simplicity: sold as a singlepiece unit for easy integration and replacement. Key attributes Model: R123 Configuration: ONOFFON Momentary Mounting size: 12mm panel hole Pack: 1 piece Function: Toggle switch handle for panel mounting Material: not specified in the listing Performance: designed to deliver threeposition control with momentary action as described by the model Applications and use cases Electronics projects and prototyping: implement threeposition control with a momentary option for testing sequences or selecting power paths. Control panels for equipment and machines: provides a compact switch for mode selection or signaling in limited space. Dashboards and automation projects: suitable for hobbyist or professional installations requiring a threeposition switch with momentary capability. This description reflects the product's model, features, and intended use without introducing additional details beyond the listed specifications.