Creating a flood warning With the objective to devise a simple flood alarm that is actually usable materials that are cheap and easy to fabricate all household-level and community-level education and work and how the float switch in the circuit: By the principle of operation of a flood warning is when the floating buoys inside PVC pipe to the pressure switch is turned on, but will continue to be open circuit wongchonsalap Dee, it doesn't work, but when the water level pressure PVC pipe in and push the float upwards when reaching critical point is the point where the men of c.Woncha evacuated to safe areas. The ball float to push the switch down and make a gift wongchonklai closed-circuit signal is sent out. Those trials have tested the circuits inside the float switch all 3 styles, each style has different results and lead the cycle actually works as intended to be used with a flood warning. By doing a test run of a flood warning for all 5 times the result of creating a flood warning. From the test results it appears that the work a flood warning has been generated. Warning signs can be a gift, as defined and designed the cycle map is accurate and reliable.
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