Once upon a time there was a small switch...

So this fairy tale is certainly known to everyone who works in industry and builds any equipment. Even though most of you know it, let me briefly retell it again. For inspiration. And to reassure you…that you are not alone. Once upon a time there was a small switch. He was kind and reliable and served in the switchboard of the beautiful overhead cranes in the oil refinery. The cranes were beautiful and proud machines. Made for a dangerous environment called…EXPLOSIVE ENVIRONMENT! And that's why they weren't just any cranes, but explosion-proof cranes and could be marked with the following mysterious combination of numbers and letters - II 3 G, Ex db eb ec IIC T3 Gc/Ex h IIC T3 Gc. Cranes were complex machines and only certain people could take care of them. But one of those cranes was naughty...sometimes he did what people wanted him to do, but sometimes he raised his head and stopped helping people. And no and no and no... People drove far and wide to find that crane and tried to cure it. The crane was stubborn. He often became good and worked well all the time people tried to cure him, only to show them immediately after their departure that he would not be cured so easily. Until one day a man came there who had a dream about a small switch at night. The switch was tiny and a little bug-like. One of many switches. Moreover, it was hidden in a strange, sealed box that was not at all easy to get to. But when the man who had dreamed about the little switch arrived and flipped the little switch... the crane recovered and started working again exactly as people needed it to. And it has been working like that for a long time now without the slightest glitch. And that's the end of the fairy tale about the little switch... I'm sure many of you have experienced it... and you know what... I'm proud that the gentleman from our small company SLT components dreamed about that switch...