Datavideo PTC-305 Instruction Manual page 51

3. Please select your desired tracking start area from the "Tracking Start Area"
drop-down menu's Zone A, Zone B, Zone C and Zone D. After that, please
select "Zone 2", "Zone 3" or "Zone 4" from "Zone" option. For example, if the
Zone 2 is set, the zone tracking area will from "Zone A" to "Zone B".
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