DS211 Green Round Button Switch with Lock — 1pc A compact, panelmounted round pushbutton switch (model DS211) in green with a builtin selflocking mechanism and small key hole. Designed for simple, secure on/off control where accidental activation must be prevented. Key benefits Prevents accidental operation: the selflocking (latching) mechanism keeps the button in the engaged position until intentionally released with the key. Adds basic access control: the small key hole lets you lock the switch to restrict use to authorized personnel. Easy retrofit and replacement: singlepiece, standard 10MM mounting size fits compact panels and control surfaces. Key attributes Model: DS211 Quantity: 1pc Color: Green Type: Round pushbutton switch with lock Locking: Selflocking latching function with small key hole for lock/unlock Mounting size: 10MM panel hole (10 mm diameter) How it solves common problems Security: Locks out unauthorized users for simple, mechanicallevel access control where electronic solutions are not required. Safety and control: Keeps circuits or functions in a defined state until deliberately changed, reducing accidental state changes. Spacelimited installations: The 10MM mounting diameter is suited to compact panels, instrument clusters, and enclosure doors. Typical applications Small industrial control panels and machinery where a lockedon or lockedoff state is needed. Access or service panels, cabinets, and enclosures to restrict operation to authorized staff. DIY electronics, test rigs, and hobby projects requiring a compact, keyed latching pushbutton. Installation and use notes Requires a 10MM panel cutout for mounting. Intended as a mechanical, panelmounted control element; check system wiring and compatibility when integrating into existing circuits. Supplied as a single unit (1pc) — suitable for projects and repairs where a single keyed, selflocking switch is required. Compact, simple, and practical — the DS211 green round button switch provides a straightforward mechanical locking solution for small panels and devices.