NABCO's CircleStar Duo has two modes of use, "revolving" and "sliding", which can be easily selected by a simple switch operation. This unit can be flexibly used according to weather conditions or volume of pedestrian traffic.
1) Revolving mode: Keeps indoor surroundings comfortable by preventing the loss of air condition because wind does not enter building interior directly as pedestrians pass through.
2) Sliding mode: The sliding part, which operates without revolving, provides safety and comfortable passage, even if many pedestrians come through.
3) Lock position: Locking the door, the revolving wing shuts the entrance .
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