How to Initiate an Alert on the React Mobile Nexus Device

Joe Silva
Joe Silva
  • Updated

To trigger an alert on the React Mobile Nexus Device, press the main button 5 times rapidly. The LED flashes red, indicating alert mode, and the device joins a separate alert channel in Hot Mic mode, transmitting audio continuously. Responders hear all audio and the button flashes blue and red when responders are active. Once resolved, the LED turns green for five seconds, and the device returns to normal use.

In this article, you will learn how to initiate an alert on the React Mobile Nexus Device.

 

How to Trigger an Alert on the React Mobile Nexus Device:

  1. To initiate an alert in case of emergency, press the main button 5 times in rapid succession.

    Screenshot 2026-01-29 at 10.11.11 PM.png
    Image of the React Mobile Nexus Device
  2. The React Mobile Nexus Device LED will begin flashing RED, indicating the device is in an alert state.
  3. Once the alert is initiated, the device will disconnect from its home channel, then create and join a separate alert channel.

  4. Once in the alert channel, the device enters Hot Mic mode. 

  5. During an active alert, Portal Responders can hear all audio from the React Mobile Nexus Device. 

    • When there are responders in an active alert, the button will begin flashing BLUE and RED.

  6. Once Responders confirm the user is safe, they can resolve the alert through the Portal or Mobile Application.

  7. When the alert is resolved, the RED LED will stop flashing and turn GREEN for five seconds. The device will then disconnect from the alert channel, reconnect to its home channel, and return to normal radio use.

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