Quantity   Component name
3 × BC547 Transistors | UTSource https://www.utsource.net/category/elec-component/transistors
3 × Resistors 330 ohms | UTSource https://www.utsource.net/category/passive-components/resistors
1 × Buzzer | UTSource https://www.utsource.net/category/sensors/other-sensor
3 × Different color LEDs | UTSource https://www.utsource.net/category/led-lighting/led-modules
1 × Connecting Wires | UTSource https://www.utsource.net/category/accessories-tools/wires-cables
1 × 9v battery clip | UTSource https://www.utsource.net/category/accessories-tools/battery-case
1 × Breadboard | UTSource https://www.utsource.net/category/accessories-tools/breadboard