The day/night switch point in <DayNightThreshold>.
optional
channelId: number
Zero-based channel, 0 to 63.
optional
threshold: "default" | "custom"
default uses the built-in threshold; custom uses thresholdval.
optional
stat: "day" | "night"
The current mode.
optional
thresholdval: DayNightThresholdValue
The custom threshold and its range.