Overall dimensions : -no more than 103x72x25mm;
Diameter of mounting holes : 3mm;
Power supply : -12-24 VDC (± 10%);
Power consumption : -no more than 5 W;
Operating temperature : -from-20?? to + 50??;
Communication Protocol : -One entrance to the floor, binary, serial channel of the elevator control system;
Support Micro SD card : 512 MB-2 GB;
File format : -*. WAV (16 bit PCM);
Functional requirements : -Speech informing about the number of the floor, overload;
-Ability to select multiple languages;
-Adjust the volume of messages.
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