Alps SKCL Double Action
Manufacturer	Alps Electric
Family	Alps SKCM/SKCL series
Part Number	SKCLKB1)
Switch Type	Double action
Travel	3.5mm
Sense method	Metal contact
Mount	Plate mount
Rated lifetime	1st: 20M cycles, 2nd: 1M cycles
Quoted operating force	1st: 90gf, 2nd: 500gf

Alps SKCL Double Action is a double action switch in the first generation of the Alps SKCM/SKCL Series.

The switch follows the general characteristics of the SKCL family, consisting of an upper and lower housing, contact module, stem, and spring.

However, there are many additional parts and changes. The housing is symmetrical, similar to SKCM Brown, the stem has a long pole and a recess for an actuator similar to the actuator in Alps SCK²⁾.

There is also a second, brown switchplate with no actuator leaf (as the actuator is in the stem) and also a very stiff second spring in the base of the bottom housing to provide actuation feedback for the second stage.

The tabs on the bottom housing are not the full width of the switch, as opposed to other switches in the series.

There is another version of this switch with an amber stem that appears to have been present in arcade machines³⁾. Its part number, if any, is unknown.

The switch was likely introduced between 1983 and 1985⁴⁾ and existed as late as 1994⁵⁾. It is unknown what became of this switch in the third generation of the series.