The delivery was fast enough for China. I easily installed this small transformer to replace halogen spotlights in my bathroom by small LED "disk" continuously operated 12V. We must now hope that LED transformer and stand the test of time. Also note that electric son not firmly compressed when the cover is screwed too "simple" but this is not a problem in my case, the transformer is placed on a traction without furniture on and son without any risk of tearing. I Want others to continue my LED replacements.