How To Make Water Level Indicator (In Hindi )

↓Component Requirement↓

1. Transistor BC547  × 4
2. Buzzer (3V - 27V)
3. LED × 3
4. Resistor 330Ω  × 3
5. Breadboard
6. Wires
7. Battery (5 - 12V)
8. Battery clip

↓Circuit Diagram↓