OTIS eCall C can call elevator via Bluetooth. The elevator would be summoned when you trigger "up & down" button in app, and then you can register the destination floor when you get into the cabin via app. Before calling elevator, you need to add OTIS elevator in the APP in advance, and enable your mobile Bluetooth.

KEY FEATURES:
-Summon elevator and select destination floor
-Add multiple buildings and change whenever you need.