mbsg99| Quantity | Component name | |
| 4 | × | Transistor BC547 |
| 6 | × | 220 ohm resistors |
| 3 | × | Colour LEDs - red, green, and yellow |
| 1 | × | Buzzer |
| 1 | × | 9V battery |
| 1 | × | Barrel Jack |
Water Level Detection Module
To Detect the Level of Water in Water Tank in order to save the extra flowing water and the electricity as well.