500PCS 5 MM LED Kit 5 Colors with Durable Storage Box Battery Holders An eye blink sensor relies

An eye blink sensor relies on infrared technology to detect if a person's eye is closed

preventing issues like low voltage

please ensure that the voltage of each group of batteries

incandescent

500PCS 5 MM LED Kit 5 Colors with Durable Storage Box Battery Holders An eye blink sensor relies500PCS 5 MM LED Kit 5 Colors with Durable Storage Box The 500PCS 5mm LED Kit with 5 Colors and Durable Storage box is a great choice for your electronics, DIY projects, and prototyping needs. It includes 500 LEDs in five coloursWhite, Red, Blue, Yellow, and Greenperfect for use in circuit boards, Arduino projects, and other experiments. Each LED has a voltage range of 2. 0 3. 4V and uses only 20mA of current, making them energy efficient and long