As a second communication level, the modern office communication system D9000 offers many features that can not only be easily adapted to your circumstances, but also significantly shorten your internal communication channels.Product features:Ceiling speakerHousing: plastic ring with metal decorative grilleTechnical data:Impedance: 8 OhmRequired. Ceiling cut-out: 165 mm (+ - 5 mm) Frequency range: 60 - 18000 Hz Outside diameter x installation depth: 200 x at least 66 mmInstallation instructions:Note:
