WATER LEVEL INDICATOR
COMPONENTS REQUIRED POWER SUPPLY (5V) NE555 IC 1 BUZZER RESISTORS ( 1X 100K, 1X1K) CAPACITOR (2.2uf) Circuit Diagram In this circuit 555 IC is used in astable mode.Implement this circuit on a general purpose PCB then attach wire ends to the wall of tank , at a desired level , whenever water level overflows this point circuit gets completed and buzzer is activated.