SoftBank 304HW User Manual page 89

Setting Sleep Mode
When operation is not performed for a certain period of time
or when charging Battery without connection to any WLAN
device, Wi-Fi router goes into Sleep mode for energy-saving.
Set time period for Sleep mode. Five minutes are set by
default. And set Sleep to OFF not to shift to Sleep mode.
" 設定 "
" スリープ設定 "
" オフまでの時間 "
・ Without using Sleep mode, Tap "ON" to turn to "OFF."
Tap checkmark for desired minutes
Wi-Fi router goes into Sleep mode at set time.
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