Sigma Muse
Muse NV

Originated from

Otis Gen2


Sigma Elevator Company




Machine room less traction

Sigma Muse (also known as Gen2 Life in Otis Elevator Korea since 2016) is the current machine room less elevator system and one of the two MRL elevator system produced by Sigma Elevator Company/Otis Elevator Korea. It is their version of Otis's Gen2.


Sigma Muse was launched sometime in the mid 2000s as Muse and was later succeeded by its second generation called Muse NV in 2013. It is very similar to Otis's Gen2. It uses polyurethane coated flat steel belts as the traction ropes, Otis Gen2's hoisting motor and PULSE electronic system which is a device that monitors the status of the flat steel belts and alerts the technicians if a damage is occurred.

Sigma Muse is designed for low to mid-rise buildings. It has a capacity from 550 to 2000 kilograms (or 8 to 30 persons) and speed up to 1.75 meter per second. It also comes with two types of doors; center opening and two speed telescopic side opening, and two types of entrances; single and two entrances.

Muse NV elevators are equipped with ReGen drive and elevator car call cancellation as the standard features.

Notable installations

Sigma Muse

  • Kar Shing Plaza, G-3/F, Kar Shing Building, Yuen Long, New Territories, Hong Kong, China (2006)

Sigma Muse NV

  • Baywalk Mall Pluit, Jakarta, Indonesia (2013)
  • Courtyard by Marriott Bali Seminyak, Bali, Indonesia (2013)
  • The Trans Resort Bali, Indonesia (2013-2014)
  • Ramada Encore Bali Seminyak, Bali, Indonesia (2014, service elevator)
  • Zia Hotel Seminyak, Bali, Indonesia (2015)
  • Na Begovoy Shopping Center, Moscow, Russia (2007)
  • Yuen Chau Kok Complex, Sha Tin, New Territories, Hong Kong, China (2016)
  • Footbridge across Siu Sai Wan Road near Harmony Road (HF163), Chai Wan, Hong Kong, China (2017-2018)[1]





  • In the elevators additionally installed in the footbridge in Hong Kong, China since 2015. There's almost no appearance difference between Otis Gen2[2] and Sigma Muse NV[3][4].
    • The only two difference are:
      • Overloaded indicator is using Dewhurst UL200 Hidden Legend indicator, while Otis's ones combined in the floor indicator.
      • If the elevator have two sets of doors, the "The opposite side doors will open" message will be played when the elevator moving, while Otis's ones just play the travelling directions message (Sigma moved those to after the floor announcement being played).

Notes and references

External links

Schindler lifts (Dewhurst fixtures 2) "This elevator only serves two floors."
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