Main controller unit is the heart of the complete PA/PIS system. This unit is housed in standard Euro Card Frame. This unit is generally fitted in each DT car of the train.

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This unit is installed in every car of the train. It contain audio power amplifier to drive the associated loudspeakers.

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The emergency talkback unit shall be installed at suitable locations inside the coach, with the microphone/ loudspeaker positioned approx. 1.5m above the vehicle floor.

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A Emergency Alarm Button shall be installed at passenger exterior doorway in the car. In case of emergency the passenger pushes this button to generate an alarm for the train driver.

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A fist microphone is connected with the main operating panel and auxiliary operating panel. The microphone is normally retained to the left hand side of the panel, by a metal clip. The microphone has a curly cord, and the end of this cord is terminated with a 9 pin ‘D’ connector.

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LCD based Dynamic Route Map Display Panel provides real time location information of the train to the passengers during the journey in user convenient format with door open / close information. The progress and position of the train throughout the journey is indicated by a progressive status bar.

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