Importance

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Abstract

An apparatus, including a monitor system which includes a microphone, a first power supply, and a transmitter which transmits a first audible sound, indicative of a normal flow of fluid into a tank, or transmits a second audible sound, indicative of a need to cease a flow of the fluid into the tank; an attachment device to which the monitor system or the microphone is attached and which is attached to a ventilation pipe or an object in a vicinity of the ventilation pipe; and a receiver system which includes a receiver, which receives the first audible sound or the second audible sound, a second power supply, and a speaker which provides a first audio output, indicative of the first audible sound, or a second audio output indicative of the second audible sound. The speaker outputs the first audio output or outputs the second audio output.

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First Claim