• × LM741 Operational Amplifier IC  1 × ₨20
• × 13003 NPN Transistor  1 × ₨20
• × 24V Ultrasonic LED Humidifier with Power Adapter  1 × ₨1,700
• × Classic Train Play Set  1 × ₨480
• × Humidifier Floating Buoy  1 × ₨350
• × 3144 Hall Effect Sensor  1 × ₨40

Subtotal: ₨2,610

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