An LED has two leads: the anode (constructive) plus the cathode (damaging). It is crucial to attach the LED the best way around in a very circuit—LEDs are polarized elements, and reversing the polarity will prevent them from Functioning. LEDs are diodes which implies that present can only movement by https://www.uk-exhibitionstands.co.uk/product/double-sided-roller-banners-premium-edge-2/