A light-emitting diode (LED) is a two-lead semiconductor light source. It is a basic pn-junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.
The primary benefits of LED based lighting is the saturated colours, energy efficiency and long life.
All fairy lights partylights.co.nz selling are LED fairy ligths, which normally using 12v of power. They are eniromental safety, safe for children and reliable.