Seuic AutoID 9 Manual page 23

5. Wi-Fi roaming threshold and roaming increment can be set by the
advanced settings according to customer needs (on the Wi-Fi switch
interface, brief press Menu button or Settings -> Advanced).
（1） Roaming threshold: when the connected AP signal value (Note:
a roaming environment is required) is lower than the set threshold, the
roaming will be triggered. When the roaming threshold is set to -65dBm,
roaming will be triggered by lower value than -65dBm.
Figure 7-3 WLAN roaming setting
Figure 7-4 Roaming threshold
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