I ordered the 1 x 16 A+1 x 32 A, Schuko 3-303 model and was a little apprehensive that it might be wired dangerously, as other reviews report their models were so. It took three months to get dispatched due to I assume supply chain issues in China, so I opened it up today and examined the internals.I have to say it all looks fine to me. Each single phase socket comes off one phase from the three phase input. Each single phase socket has its own RCD on its live wire. The two three phase sockets each have their own RCD. The wiring internally is neat and well done, with appropriately thick wires for the maximum currents for each section. The RCDs look fine quality, with the three phase plugs having proper three phase RCDs. There is a waterproof nipple supplied for the three phase mains inlet wire. The internal busbars are solid, and have extra slots in case you want to extend the wiring. Very nice.Build is solid and very likely true IP65, except for the outer sockets. They're annoyingly cheap, which is a shame because the rest of the box is not. The outer sockets are quite flimsy, particularly their spring covers. I doubt that they would last long with repeated use on say a building site. Equally they are replaceable, they can be unscrewed and easily replaced if their covers break, and the seal around them is watertight.Given that in the past I've thought a flimsy thing would break with use, and then it went on to never ever break despite years of hard use, I'm giving this the benefit of the doubt. I've yet to deploy it, but for the price I paid (it was well below current prices, I paid £80), given the evident quality apart from the outer socket covers, and given it has been designed to be maintained and/or customised by the average user over the long term, I'd highly recommend this box if you need such a thing (e.g. EV charging, soil sterilisation ovens etc)
Paul 
