Purchased to connect LED strips, 2 transformers work fine. Prompt receipt. Smaller than what I imagined size. The + and - connectors are mentioned (not the case of all transformers) so all is well. I recommend especially for the value.
In addition, the company (a pro LEDs in England) is ultra serious. I discussed with them by email to various boards and they are really pros (and super friendly and more). I highly recommend! So many good people to work rather than bad!