Intuitive operation of the main and secondary functions via differentiated buttons, Large offset blue door release button with activatable storey door release function, Large offset speech button, Light button, Control button ex works: assigned with control function / activatable alternative assignment: Internal call, automatic door opener, call forwarding, call-off button for ringing tone deactivation with optical display, optical display and short-term storage of door calls, optical busy display for existing speech connection, sending of sender serial number for internal calls, selection from 13 ringing tones, adjustable by the user, Ringing tone volume adjustable in 8 steps by the user, Speech volume adjustable in 8 steps by the user, Acoustic and optical call differentiation between 2 front door, flat door and internal calls, 1 parallel call with service unit adjustable, Monitoring block and automatic call disconnection, Base plate can be pre-installed with plugged-in screw terminal and alternatively equipped with sister product door telephone, configuration software configo can be used for convenient system configuration on the PC with automatic recognition of device type and serial number, optical error display for time-saving commissioning, Functionally expandable through installation slots for call relay and control of radio signal device, For surface mounting, mounting via flush-mounted box or table mounting with table accessory ZIT3030-0010, Signal transmission and power supply via polarity-free and short-circuit-proof 2-wire TCS:BUS, audio and video indoor stations can be combined within one system, 2-wire technology: modernisation-friendly, 3-wire technology possible, according to EN 50486, colour: white, housing made of antistatic and recyclable plastic, 2-wire technology, input current (2-wire): I(a) = 1.4 mA at rest, 3-wire technology possible, input current (3-wire): I(a) = 0.2 mA, I(P) = 1.2 mA at rest, maximum input current: I(Pmax) = 74 mA, permissible ambient temperature: -5 degrees C to +40 degrees C, dimensions: H 180 mm x W 100 mm x D 25 mm
