Elevator buttons and others components.
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A dot-matrix display is a display device used to display information on machines, clocks, railway departure indicators and many other devices requiring a simple display device of limited resolution.
For each power supply, there are two output terminals for interphone and emergency light.
TFT (thin-film transistor) LCD are designed for the ultimate combination of performance and value.
The Point-to-point intercom system provides communication between the lobby or hall station and the elevator car.