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Operation : The whole data is recorded to the memory card as a text file. A 1GB card is sufficient to record many years of data. In the below figure, you can see the snapshot of the recorded data.
There are four functional buttons on the project :
MENU : By pressing a long time you'ill enter the setting zone.
UP : To increase the value.
UP : To decrease the value.
OK : To save/select the value.
When you enter the setting zone, you can set different things as shown in the LCD picture below.
The time is for 12 hrs format but during the setting it is set as 24 hrs of format. For example, if you want to save 3:00pm then it is set to be 15:00. The interval is the time delay between each recording of data. The recording interval setting is from 1 to 300 seconds. By refreshing the card, all past data are erased.