built-in spkeaker Door communication

Product description

Built-in speaker - Built-in loudspeaker for mounting in letterbox systems, voice compartments, door-side installations or front panels. - Up to eight mechanical bell buttons can be connected to the screw terminals provided. - Signal transmission and power supply of loudspeaker via reverse-polarity-protected and short-circuit-proof 2-wire bus. - Compact size. - Weather-resistant loudspeaker. - High-quality electret microphone. - Alternating current polling of the bell button connections to prevent oxidation on the button contacts. - Securing of connection terminals against incorrect connection. - Up to eight mechanical bell buttons can be connected. - Colour camera for door station can be connected. - Hands-free feature (voice-controlled talk-back with echo and background noise suppression). - Voice volume adjustable. - One-man commissioning with simple commissioning procedure. - Acknowledgement tone when call button is pressed. This component enables door communication systems with up to 140 audio devices to be set up (e.g. 1 x built-in speaker, 11 x add-on modules for built-in speakers, 136 x surface-mounted home stations). The video control device is required if the system is expanded with a colour camera. Protection type IP44 only in combination with a suitable front or when installed.