Visitors at an open EkoZefir ventilation unit controlled by tablet

Photo: Mariusz Młynarczyk / CloudAir.tech

Visitors examine an open EkoZefir ventilation unit set on pallets and controlled from a tablet on a stand. A large graphic on the right shows an exploded heat recovery unit with fans and filters beneath the green EkoZefir logo, and a camera on a tripod records the demonstration.