User Manual

Web interface - Reference point

5.4.3. Reference point

Reference point alarm is a tampering alarm used to detect if the sensor has been moved or covered. Reference point

alarm is possible only when the laser sensor is aligned in a manner where there is a reference object and the signal

stability is good. To add a reference point alarm:

1. In the Alarm settings tab, click on ‘Add alarm’.

2. Select ‘Reference point’ from the ‘Input’ drop-down menu.

3. Enter the distance to a selected reference point in meters.

4. Enter the target variance, the maximum allowed change in distance relative to the reference point before the

alarm is triggered. Enter values in meters.

5. If applicable, enter a value for alarm delay. This indicates the time which the reference point must be faulty before

an alarm is activated. To avoid false alarms, the alarm delay should be signiﬁcantly dierent from the time of a

standard object passage.

6. Press ‘Add’ to conﬁrm the settings.

7. To create alarm actions for the reference point, press ‘+ Add action’. Input ﬁelds appear on the right.

8. Choose the action event type from the drop-down menu options.

9. Press ‘Save’ to conﬁrm settings.