Concierge unit is used for operating jointly with Cyfral CCD-2094.1series with coordinated communication line. Power is provided from the doorstation. Possibility to work with Cyfral BK-02 return call unit. 

Concierge unit is used for operating jointly with Cyfral INTEL series with coordinated-matrix communication line. Power is provided from the doorstation. 

Return call unit provides making calls to the concierge from any subscriber’s device. It works jointly with Cyfral BK-01 concierge unit as a component part of doorphone systems of Series Cyfral CCD-2094.1