Seuic AutoID 9 Manual page 24

(2) Roaming increment: when the signal difference value between
the two APs reaches the set value, roaming will be triggered to connect to
the AP with better signal value. If the difference value between the two
APs is higher than 5dBm, as shown in the figure (Roaming threshold is
also required to be reached), roaming can normally start.
Figure 7-5 Roaming increment
5. WIFI work mode configuration: support module configuration of
fixed work mode (a/b/g/n), and the default is 802.11 AUTO.
Figure 7-6 WIFI work mode configuration
22