1pc DS211 Yellow Round Button Switch with Lock — Selflocking, Small Key Hole 10MM Why you need it Adds controlled, secure on/off functionality to panels and equipment. The selflocking mechanism prevents accidental activation and keeps operation restricted to authorized users. Compact, clearly visible yellow button provides intuitive status feedback and easy identification in control layouts. Simple, lowprofile design fits small installations where space is limited while still providing a positive locking action. Key benefits Controlled access: Keyed lock ensures only authorized personnel can engage or disengage the switch. Antiaccidental operation: Selflocking action maintains the chosen state until the key is used, reducing unintended changes. Spacesaving: Small key hole and compact round form factor are suitable for tight panel layouts. Product highlights and attributes Model: DS211 Color: Yellow Form factor: Round button switch with lock Lock type: Selflocking (maintained state until unlocked) Key hole size: 10MM (compact key aperture) Quantity: 1pc Functionality and compatibility Designed for applications that require a keyed, maintained on/off action. The 10MM key hole dimension makes it suitable for panels or enclosures with small mounting holes or restricted frontpanel space. Straightforward installation for systems that accept a 10MM round switch cutout. Use cases Industrial control panel: Provide authorized start/stop control for machinery or lines where accidental activation must be avoided. Security or access systems: Use as a compact, keyed control to enable or disable alarms, door controllers, or restricted functions. Equipment and hobby projects: Add a simple, secure power or mode selector to custom enclosures, test rigs, or electronic projects where a small keyed switch is preferred. What's included 1pc DS211 yellow round button switch with lock, selflocking, small key hole 10MM Notes This listing is for the DS211 model as described: yellow round button, selflocking lock switch with a 10MM key hole. Ensure your panel or enclosure accepts a 10MM round switch cutout before installation.