Though there are many water level alarm systems available, the features are directly proportional to the price.
A very basic system can be designed using electrodes and an alarm to complete the electrical circuit. The procedure is as follows:
1.Connect an alarm to the electrodes .
2. Place the electrodes just below the opening of the water tank so that when the water reaches the electrodes current flows through it .
3. When the current flows through it , the alarm goes on and when the water level is below the electrodes , the alarm is off.