The switches do not have any pin number markings and contrary to the mechanical drawing on the website, the length of the LED pins is exactly the same. There is no difference between anode and cathode. This means you have to test every switch by hand to find the LED orientation and mark it with paint or nail polish. Very tiresome. Also, the forward voltage of the LED's in the switches sent to me is 3.16 volts (this information was missing from product description, but it is important to know). Seller provided incorrect tracking number. Three weeks shipping to USA by DHL. (September 2020)
I never received goods and do not read and reply my message for a refund, very bad seller and not proffessional, i'm very hungry 22 USD LOST