This LM1830 low level detector schematic circuit based on the LM1830 low level detector IC require very few external components and is very easy to build .
This LM1830 low level detector can use an audio indication (speaker ) or a visual indicator (LED- light emitting diode ) that will light when the level is too low . This low level detector circuit will generate a 500 Hz audio signal when the level is low .
This low level detector require a 16 V DC power supply and the recipient must be from some metal , because you need to connect the ground of the circuit to the recipient .
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Title: Hydro alarm circuit diagram
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