What is the lone worker function?

The lone worker function sends a response request to a user, for example a security guard patrolling an area at given times. The user is required to respond within a short period of a request otherwise an alarm is activated.

The system must have at least one radio with a screen (usually held by control or a supervisor) so that the radio with the alarm can be identified. By activating the lone worker feature on the radio, a timer within the radio measures inactivity and will automatically send the emergency call described above if the timer is exceeded.