+86-13858200389

All Categories
  • 28/06/2020
    Main Functions of Roadside Extension/Tunnel Extension

    Emergency phone users can directly communicate with the operator of the emergency phone console, and push-to-talk (easy to operate). After the user presses the extension button, the sub-unit can automatically send a call to the console host of the monitoring center, and transmit basic information such as the local kilometer mark, up-down direction, etc. Each… Continue reading Main Functions of Roadside Extension/Tunnel Extension

    Read More