Water Tank Overflow Alarm With Momentary Switch To Turn Off The Alarm

Water Tank Overflow Alarm With Momentary Switch To Turn Off The Alarm and with power and full tank Led indicator.

The simple circuit given here sounds an alarm whenever the water level reaches the top position in the overhead tank thus it alerts one to turn off the motor to prevent water wastage. It has a power indicator and a full tank led indicator apart from the alarm. The power to this device can be kept "on" all the time (24 X 7). We can turn off the alarm sound by pressing the momentary switch. We can use contact type sensors or float switches to sense the water level inside the tank. We can use this circuit in overhead tank, swimming pools, underground sump, aquariums, etc.. to monitor the top level.
If you are looking for a semi-automatic controller circuit, click here or a simple automatic water level controller circuit,click here. This circuit can be powered by a 9 or 12v step-down transformer of current rating ranging from 200mA to 500mA. We can use speaker wire to connect the device to the sensor or float switches inside the tank. For alarm, here I have used a continuous tone buzzer. We can also use musical buzzer or a recordable chip with a slight modification in the circuit.