Pass & Seymour, 500K, 1 Piece Locking Light Switch Key, For Heavy Duty Locking Switch "I" Series - Newegg.com
A key to use the lights : r/specializedtools
Extra Heavy Duty Industrial Grade, Locking Toggle Switches, General Purpose AC, Single Pole, 20A 120/277V AC, Back and Side Wired Key Guide | HBL1221L | Hubbell
Wall Switch Key - Grainger
Light Switch LED Indicator EU FR Power Socket Wall Outlet Piano Key Lamp Light Reset Light Switches TV RJ45 Gray Silver - AliExpress
Light Switch Panel with Slot, seen in Hotel Room : r/whatisthisthing