Lone worker alarm SRT406

SRT406 is a modern, high quality lone worker alarm made for professional users.

  • Voice over LTE (VoLTE) with 2G backup
  • Display
  • Up to 90 hours battery lifetime
  • Speaker and microphone
  • Motion detection
  • 99 channel GPS/GLONASS/Galileo receiver
  • Intelligent battery saving mode
  • Multiple alarm types
  • Dust and water protection (IP67)
  • Dimensions: 92x50x22 mm
  • Weight: 108 gram

SRT406 is the result of years of experience developing lone worker alarms and comes fully loaded with handy functions.


SRT406 can handle a range of different alarm types. The big red button is normally used for emergency situations. The two function buttons can be used for less critical situations or for communicating with secondary alarm receivers. Automatic alarm types such as ManDown (based on the device rotation) and Timer-alarm (timer based alarm) are also supported.


SRT406 is equipped with a display for easy interaction with the device. The device menu allows you to change settings and view status messages. And during an emergency situation, all device events are clearly displayed.


With SRT406 you can choose the report format that suits your needs. It supports many standard formats and the possibility to create completely custom formats. Alarm reports can be sent to multiple receivers making the SRT406 fit for use cases requiring redundant communication.

SRT406 front view
SRT406 side & top view
SRT406 side view