As Could be seen from the image, the LED symbol system is made up of a diode symbol with two arrows. The 2 arrows denote that mild is emitted from this machine. An LED has an anode and cathode terminal. During the image, the anode is to the still left https://www.uk-exhibitionstands.co.uk/product/banner-stand-36x60-displays/
What Does Advertising Stands Mean?
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