Billion BiPAC 7800(N)X(L) User Manual page 169

Time Schedule: Select or set exactly when the rule works. When set to "Always On", the rule will
work all time; and also you can set the precise time when the rule works, like 01:00 of Sun to 19:00
of Friday. Or you can select the already set timeslot in "Time Schedule" during which the rule works.
And when set to "Disable", the rule is disabled. See Time Schedule.
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