The transformer is well made, and compact. Unfortunately it does not work as specified by 10-60Watt. I closed at 5 LED lamps a 4Watt, which corresponds to a load of 20 watts. The lights were blinking only. It was only when I swapped a LED to a 20W halogen lamp (36W then) everything worked properly. So clearly does not specify from 10W. Therefore 2 star deduction.