Comelit 2603u - citofono basic sistema universale serie s..

Universal intercom compatible with the majority of intercoms produced by the main world manufacturers. Ideal for replacements and repairs of intercom installations. Conversation key on the base, call volume adjustment and privacy. It has a door opener button and an additional button for additional services with independent common. It has a volume regulator for loudspeaker and volume regulator for microphone to meet any need, it can be used both for systems with positive common and for systems with negative common, it can replace interphones with condenser microphone and with carbon capsule, has electronic call or mechanical call via buzzer. In this model it is not possible to add additional buttons or LEDs. Dimension