Quantity   Component name
1 × Arduino Shield <a target="_blank" rel="noopener noreferrer" href="https://www.sparkfun.com/products/10618">https://www.sparkfun.com/products/10618</a>
1 × Solenoid <a target="_blank" rel="noopener noreferrer" href="https://www.coleparmer.com/i/asco-411m2112hv-solenoid-valve-two-way-normally-closed-12v-2-watts-100-psi/9851524">https://www.coleparmer.com/i/asco-411m2112hv-solenoid-valve-two-way-normally-closed-12v-2-watts-100-psi/9851524</a>