Description
A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. The color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor.








RFID Reader Module MFRC522
Buzzer Big 5V
Long Nose Plier
Hacksaw
Wire Stripper
Mini Hacksaw
Screwdriver Set Multi-purpose
Drilling Workstation
LEDs - White
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