Can save the graph on the screen
Can see the old history graph. For open, go to menu and click open old histoy graph. After click, automatically open the ‘open old graph box’. Here must select two options
1. Date and time
2. Display resolution.
This date and time are starting time of the graph. And the display resolution is how long must show the display. Here date and time are any old date or old time (past time)
Can change the time resolution of the present graph. For change go to menu and click time resolution. After click, automatically open ‘time resolution box’. Here can select any one of the time resolution.
These are
1. 15 minutes
2. 30 minutes
3. 1 hour
4. 2 hours
5. 4 hours
