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Fumosity it is 5V input,There are 4 conductive lines on this circuit board (two short in the middle and two long on the side) When the water level does not touch any of these 4, it is the low water level at this time. When the water level touches the two long lines next to it, but does not touch the two short lines in the middle, it is the middle water level. When the water level rises to reach the two short-circuited lines in the middle, the water level is high at this time. Three LED lights on the main board indicate three water level states: high, medium, and low

2020-08-25 01:06:14 Yararlı (0)
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