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Example: on=6, off=19, mix=150 → Inv+Grid 06:00–08:30 and 16:30–19:00; Inverter only in between (unless LDR overrides).
Overnight example: On=20 (8 PM), Off=5 (5 AM). Same on/off hour disables UPS schedule.
In the middle schedule phase, Inverter-only requires 2-minute average at or above this value.