Quantity   Component name
1 × ESP32 dev board
2 × Modern Devices current sensor <a target="_blank" rel="noopener noreferrer" href="https://moderndevice.com/product/current-sensor/">https://moderndevice.com/product/current-sensor/</a>
1 × Button
1 × LED Fiber Optics / Emitters
1 × Resistor
1 × Case