2VOICE, two wires throughout the system for quick and easy installation. Maximum flexibility: from single-family homes to larger building complexes.Product features:Expandable basic set consisting of: 1x video bus power supply NG1083/20A 1x built-in door loudspeaker TL1083/8Built-in door loudspeaker up to 64 buttons/participants can be connected (with EM 10383/17) Technical data:Compatible with system 2VOICEInstallation instructions:Note:
