Ultimate Security Devices On-Off Chicago style key switch lock with 2 keys (One Key-pull, equivalent to Chicago C2174-1)
Key Switches — Switch Electronics | Your One Stop Component Shop
One Way Copper Plug Key Switch, 4mm Terminals with Removable Plug - Ei — Eisco Labs
Secure fire key switch call point - CXK | Fulleon | Eaton
Elevator fire service PHASE ONE key switch lock, three position two key-pull with two keys
Cherry Switch Guide: the Standard, Silent, and Speed Switches
Usb Single Keyboard, One Key Mechanical Shaft, Wired Enter, Custom Switch Password, Medical Screen Cutting Desktop Shortcut Key - Instrument Parts & Accessories - AliExpress
E-Z-Go Car Ignition Switch w/ Lights, One Key 33639G03 | Zoro
ACS Products Co. Ignition Switch Model A510-5 | eBay
I made a single key mechanical keyboard using an Arduino QT PY : r/MechanicalKeyboards
SAP2244A Key Switch 5 Position
Single pole Key switch Synergy - 1 gang - 2 way - 10 AX 250 V~ - white - 7 300 08 - Legrand
Amazon.com: Mini Relay Wireless Switch DC 4V 4.5V 5V 6V 7.4V 9V 12V Wireless Relay Remote Control One Key Switch Receiver + Transmitter for Computer Auto Door Window Lifting Equipment Entrance Access,
A126 Key Switches, Momentary & Maintained Access Control & Automatic Door Equipment
A set of one-key and two-key switches in the on and off position, light switch illustration Stock Vector | Adobe Stock
One Way Copper Plug Key Switch, 4mm Terminals with Removable Plug - Ei — Eisco Labs
KEY SWITCH | CONTROL KEY SWITCH | S | TAKIGEN : Manufacturing for all industries world-wide
Usb Single Keyboard, One Key Mechanical Shaft, Wired Enter, Custom Switch Password, Medical Screen Cutting Desktop Shortcut Key - Instrument Parts & Accessories - AliExpress