Water Level Indicator

This project is a simple and practical measure and know the level of reservoir. The component IC CMOS 4066 used as switcher on any level detector/sensor that connect the negative polarity pin of each LED to ground. Buzzer will be sounded if full level sensor achieved.

Water Level Indicator

Source: iloveelectronic


  1. Mrx_karl October 20, 2011 11:09 pm 

    I have made this, but the LED1 and LED3 are switched ON even when the water does not contact with the second and third wire. Supposedly, the wires are not closed and LED1 and LED3 are not switched ON. Can anyone please tell me what’s wrong with my circuit? Thanks.

  2. Juwaan7 January 13, 2012 4:28 pm 

    plz tell me is transistor

  3. Ashish ghogare March 27, 2012 3:06 pm 

    which type of wire may be used………e.g. cu,Al,……..

  4. john March 17, 2016 2:46 pm 

    how does it works

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