Inwallspeaker door communication system built-in loudspeaker for installation in letterbox systems, Sprechfaecher, Tuerseiteneinbauten or front panels. To the existing screw can up to 8 mechanical push buttons are connected. The built-in loudspeaker offers the following product features: - Signaluebertragung and supply of the speaker about the reverse polarity protected and short-circuit-proof 2-wire bus. - Small size. - Weather-proof speakers. - High-quality electret microphone. - AC query the doorbell connections to prevent oxidation of the key contacts. - Protection against incorrect connection of the terminals. - Up to 8 mechanical push buttons connected. - Color camera for Tuerstation connected. - Speakerphone (voice-controlled talk-back with echo and background Geraeuschunterdrueckung). - Sprachlautstaerke adjustable. - A one-man operation with easy startup procedure. - Acoustic acknowledgment signal at Ruftastenbetaetigung. - The component of the structure of Tuerkommunikationsanlagen is possible with up to 7 participants (eg
Ceiling Speaker, 5 expansion modules for built-in speaker, 68 home stations AP). Power supply: 26 V DC 2 V (bus) connections: 2 screw terminals for 2-wire bus connections: 2 screw terminals for additional supply connections: 8 screw for mech. Rings connections:
Screw joint mass of the Rings connections: 2 system bus connector strips connections:
Video connector Dimensions: W x H x D

x 67 x 27 mm Temperature range: -25 C to +7 C Protection: IP 44 Type:
258 sales unit:
ST.