Supply Of Volt Meter, Amp Meter, Power Supply Socket (3 Pin Female), Buzzer (alarm), Oxygen Sensor Cable With Connector, Base Wheel, Exhaust Fan 0.13 Amp Model No-12038hb2, Regulator Knob, Fuse Holder, 8x5 Mm Tube (pipe), Bacteria Filter, Capacitor, 3.7 V (EXPIRED)