Cheap imported "rainproof" power supply (long version).

This is the long version of the video. A shorter version with less detail on the circuitry is also available. It starts the same so you can skip the first bit if desired.
https://www.youtube.com/watch?v=GInptwvmj_s
I had high hopes for this power supply, since the images did show at least some effort to shed water over the outside of the case, but the implication that this could be mounted to a wall to power 12V equipment is not really accurate.
I could see this type of unit being used inside a box sign for 12V LED based signage where the unit was not directly exposed to the weather but had some protection from dripping water.

Things to note about cheap power supplies imported directly from China. They may not have good isolation between the mains voltage side and low voltage side so the 12V side should be regarded as being potentially at mains voltage. Made worse by the fact that some RCDs/GFIs can be rectified and smoothed power. Their rating is often pushing the limits, so always under run them. They have little or no interference suppression for RF noise. They don't always have adequate shielding of live mains connections and may pose a shock hazard.
If you require a low voltage supply for an application involving commercial use or a situation where people will come into direct electrical contact with the low voltage side then only use a power supply bought from a high profile electronic component supplier in your country. That removes a lot of liability and gives greater reliability.

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Видео Cheap imported "rainproof" power supply (long version). канала bigclivedotcom