| Part No. | Description | |
| 101470 | 9V Battery Snap Holder with 10 Inch Wires | |
| 1108144 | Phototransistor Visible Spectrum NPN 5mm 570nm 100mW | |
| 198731 | 9V Energizer® Alkaline Battery | |
| 20723 | 830-Point Solderless Breadboard 6.5" x 2.125" | |
| 2127718 | 70-Piece Jumper Wire Kit - 22AWG 14 Lengths 10 Colors | |
| 2234134 | Micro Round 8 Ohm Mylar Speaker 93 dB 1.5 Watt 1.5" Wires | |
| 904114 | IC LM556N DUAL (555) TIMER | |
| 25540 | Capacitor Monolithic Ceramic 0.22µF 50V ±20% | |
| 330820 | Capacitor Radial 47 uF 50 Volt 20% 105c 6.3x11x2.5mm | |
| 691104 | Resistor Carbon Film 10k Ohm 1/4 Watt 5% | |
| 691260 | Resistor Carbon Film 47k Ohm 1/4 Watt 5% | |
| 691585 | Resistor Carbon Film 1.0M Ohm 1/4 Watt 5% |