Description

Water Level Indicator and Alarm

Generally, water stored in overhead tank is wasted due to over flow ,when the tank is full. This Project shows simple circuits of water level indicator with alarm.

Components Required

• Breadboard
• Jumper Wire
• LED (Red, Yellow, Green)
• Resistor-1k ohm
• 9v Battery
• 9v Battery Connector
• on/off Switch
• ULN2003 IC
• Buzzer
• Circuit Diagram

Working

• This circuit can be used to indicate three levels of water in tanks.
• When metal contact is reached ,each Led starts glowing.
• When the tank is full buzzer starts ringing along with this all LEDs are ON.