Tag: Armored Telephone with Caller ID Display

21/08/2020

Functions of Satellite Road Tunnel Emergency Telephone Broadcasting System

Expand the broadcast function to control the broadcast of the tunnel without adding optical fiber (share an optical fiber with emergency phone), including single call, slice call, full call and volume adjustment functions. At least two sound sources can be played simultaneously. Can be displayed in linkage with the monitoring screen of the monitoring sub-center… Continue reading Functions of Satellite Road Tunnel Emergency Telephone Broadcasting System

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