Editing KPT switch (section)

==Variants==
===Blue (rectangular slider)===
[[File:KPT-switch-blue-from-KPT-84.jpg|250px|thumb|right|Blue KPT switch with rectangular slider on a KPT-84 keyboard]]

This is the most common KPT switch. The slider is completely rectangular in cross section. There is one long lower plate mount securing lug per side.

The switch is confirmed to be not an [[Omron clone]]. The distance between the top of the [[PCB]] and the bottom of the [[plate]] should be 4.5 mm, but instead it is around 6.7 mm. Instead of 12.2 mm, the switch is 13.3 mm tall including stand-offs. With this deviation alone, replacement of all switches in a keyboard should be possible, as the PCB is not typically attached to the plate, and the leg spacing appears to be the same. However, the switch dimensions at the mounting plate are approximately 15.5 × 12.5 mm compared to the Omron expectation of 13.4 mm squared.

===Blue (Alps-style slider)===
The slider has an Alps-style cross section. There are two short lower plate mount securing lugs per side. The slider pigment is a darker, greenish shade of blue. The lower shell is effectively the same as that found in the rectangular slider version, so they should be fully interchangeable. In the [[KPT KPT-102]], they have been found used for just the top two rows of keys, although more often the KPT-102 uses only the rectangular slider version. This version of the switch is described as "vaguely Alps-like feel", while the rectangular version is described as "closer to amber Omrons";<ref name="GH-comparison" /> the cause of this observation is a mystery as the internal parts appear to be the same.

===Amber (Alps-style slider)===
The lower shell of the amber version is distinctly different. The distance from the top of the PCB to the top of the plate is reduced to 5.2 mm, which in between that of blue KPT and Omron. At around 13.2 mm, the switch is marginally shorter. The tactile point seems to be higher than with blue KPT, and stronger, suggesting that this has the operational characteristics of the blue Alps-style switch.

No keyboards have yet been discovered using the Amber version of the switch.