Sigma Elevator Company

Sigma Elevator Company

Sigma Elevator is a Korean elevator company serving its customers since 1968

2001 to early 2010s

​First batch (2001 to 2012)

These are the fixtures used in early Sigma elevators from 2001 until the mid 2000s. They are several variations of button but some of them have been discontinued in the early 2010s.

First batch (2001-2012)

​Rectangular buttons

These buttons were originally made by LG Elevators in the late 1990s, and production was carried over to LG-OTIS after Otis bought LG's elevator division (LG Industrial Systems) in 1999. When Sigma was formed in 2001, the company began using these buttons. These buttons are rounded rectangular with braille and both an illuminating halo and number. Early buttons had only an illuminating halo.

Sigma made two versions of these buttons. The first one is a surface mounted button that comes with braille marks, and the second one is a flush mounted button with or without braille marks. Both versions were commonly used in older Sigma Di (Distributed Inverter) elevators, as well as modernization of older GoldStar elevators. The flush mounted version was also used in older Sigma Iris elevators from the mid 2000s until the early 2010s.

First batch (2001 to 2012)

​Rectangular buttons

Depending on the type of car station, the type of alarm button used may vary. If the car station has a black capacity plate (where the alarm button, intercom speaker and direction indicators are located), the button is a silver round. If the car station does not have the plate, the button is the same as the other buttons but it is yellow instead.

First batch (2001 to 2012)

​Round buttons

These are round convex buttons with red illuminating lamp in the middle. The alarm button is round silver, and it is found on the capacity plate. They were also used in the American Sigma elevators in the United States and Puerto Rico, which have been modified to include braille plates next to the buttons to meet ADA codes.

First batch (2001 to 2012)

Square buttons

These buttons look just like the round convex buttons except they are square. They have a tiny red lamp on the top left corner of the button, as well as red illuminating number/symbol in the middle.

First batch (2001 to 2012)

Floor indicators

Sigma used 16-segments display which light up either red or orange for the floor indicators. The floor indicator on the car station is a rectangular display above the capacity plate. The two directional arrows, which are orange illuminating triangles, can be on the floor indicator itself or on the capacity plate below the indicator. By 2005, LED dot matrix indicators with a scrolling arrow became available.

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