Data Sheet

Functionality USPACE-KYD-2F
2.2 Monitoring zones and events
Tags are out of the “view zone” if they are not mutually accessible over the DASH7 scan wireless
link or when their relative distance, measured in terms of signal attenuation (link budget) exceeds a
certain threshold (typically 80 dB). The view zone’s radius is thus typically roughly 10-20m.
When a tag is in the view zone of a distant tag, it first gets the distant tag custom “alert zone” and
“safety margin”. The alert zone may differ from one object to another. For example the alert zone
for Covid-19 distancing (object = human) is typically 2 meters. It can be set to 5 meters for a
moving trolley, a freight elevator, a high voltage transformer or another industrial machine or tool.
A safety margin (hysteresis) is provided in order to avoid toggling the alert / contact states. The
safety margin is typically 20 cm, in accordance with the UWB measurement error.
WIZZILAB Technical datasheet 5/20