Lone worker alarm SRT405

SRT406 is a modern, high quality lone worker alarm in a small and handy size.

  • Voice over LTE (VoLTE) with 2G backup
  • Display
  • Up to 48 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: 60x46x20 mm
  • Weight: 54 grams

SRT405 is the result of years of experience developing lone worker alarms and comes fully loaded with handy functions.

SRT405 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.


SRT405 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 SRT405 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 SRT405 fit for use cases requiring redundant communication.

SRT405 front view
SRT405 top view
SRT405 side view
SRT405 bottom view