Quantity   Component name
1 × MPXV7002DP breakout board
1 × Arduino Nano V3.0 with I/O expansion board
1 × Serial LCD 1602 16x2 module with IIC/I2C adapter blue or green
1 × 12x12x7.3mm Momentary Tactile Push Button Switch with a keycap
1 × DC 5V Active Sound Buzzer
1 × 2mm ID, 4mm OD, Flexible Silicone Rubber Tubing
1 × Dupont jumper wires and self-tapping screws (M3x16mm, M1.4x6mm, 6 each)
1 × 3D printed sensor body and the case