To adjust the water level in the use of ultra sonic by thaeng is divided into two sections, namely, pumps and pump, which we will use to relay to control on/off pump is defined by the principle of water level and water level, ultra sonic in thaeng. If the water is less than that given in thaeng. The open relay water pump water into and through the required level thaeng the relay turns off the pump immediately. Best if there is greater than the value given in thaeng relay will open another water pump to pump out until the desired water level.
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