Like another reviewer here, I also have noticed a hum from the transformer. The top part of the cabinet that houses the transformer gets quite warm (at the cost of my electricity bill) because the transformer is permanently 'on'. Have dismantled and removed the wiring so now the shaver socket is inoperative and the hum has vanished. Will try rewiring with switch if I can find a suitable switch.
Having bought a shower caddy from this company which was excellent, I went for this cabinet. Very disappointing. The instructions were hard to follow, the door did not fit properly as it had an uneven gap on the side of the 'hinges'. (the hinges were just little pegs, not the hinges shown in the picture). When fixing the wall attachments on the back the wood split badly. Altogether a very poor and shoddy purchase.
Good product, only three very precise hanging brackets on the rear, no room for error for your average DIY'er. overall a good product that does exactly what it says on the tin!