The KS-TR series comes in Light, Medium and Heavy, sharing the same key travel but differing in spring weight and feel, from effortless and fast to firm and deliberate. Medium ships by default in the K-001. Full comparison and specs.

The KS-TR switches (Light, Medium, and Heavy) are designed for north-facing PCB layouts only. When installed, the integrated light guide must face toward the top of the keyboard. On south-facing PCB layouts, the light guide may interfere with the underside of the keycap, preventing proper keycap installation and restricting key travel.

Note: North-facing and south-facing refer to the position of the per-key backlight LEDs on the PCBA relative to each switch. In a north-facing layout, the LED is positioned above the center of the switch. In a south-facing layout, it is positioned below the center of the switch.