Quantity   Component name
2 × NE555 Discrete Semiconductors / Power Transistors and MOSFETs
1 × N channel Power mosfet
1 × small npn transistor
1 × pot 100k
1 × pot 10k
1 × buzzer
1 × led Fiber Optics / Emitters
1 × search coils
1 × Resistors, capacitors...