Optex REDSCAN Series Manual page 65

Save the changes.
4.
⚫ Click Save button.
Note: Block size of Area Masking / Allocating differs depending on model and setting.
RLS-2020 series: 200 mm (0.66 ft.)
RLS-3060 series: 300 mm (0.98 ft.)
RLS-3060SH version 8.0.0 or later with detection range expansion: 500 mm (1.64 ft.)
65