Quantity   Component name
1 × BD140 transistor https://www.utsource.net/itm/p/257854.html
1 × 100ohms resistor https://www.utsource.net/sch/100R%20resistor
1 × 10k resistor https://www.utsource.net/sch/10k%20resistor
1 × LED https://www.utsource.net/category/led-lighting-1.html
1 × Buzzer https://www.utsource.net/itm/p/8027891.html