Αντισταθμιστικός ανεμιστήρας εξαερισμού πυρκαγιάς

HTF Fire Control Fan Highlights: This fan is set up with double-speed motor, it operates at a low speed normally and used for ventilation. Once occurrence afire, the fan is automatically transferred into high-speed and discharge smoke by the electric control system, which facilitates safe evacuation ...