Chapter 3 Basic operation method
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Press left / right key, to switch screen.
History
It has real-time mode and history mode.
In real-time mode, data is refreshed in real time according to the recording
interval, while in the history mode, that is, the query mode, the history data is
displayed according to the input time.
Press increase/decrease key to check alarm information.
Press left / right key, to switch screen.
History-1