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    A water-level marker is an electronic circuit device that transfers data back to control board to show whether a waterway has a high or low water level. Some water level markers utilize a mix of test sensors or changes to detect water levels. The reason for a water level pointer is to measure and oversee water levels in a water tank. The control board can likewise be customized to consequently turn on the water once levels get excessively low and top off the water back to the sufficient level.

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    The water level indicator circuit consists of a transistor element and a buzzer which indicates the overflow of water or excessive water in the container. When the water reaches to maximum limit it shows and blinks the LED with buzzer sound to stop pouring or filling water. Let’s make our indicator to save water with automated technology.

    NOTE: The positive terminal of the buzzer has to be connected to the emitter of the transistor and not the base.