"Very poor product. I have attempted to use 3 over the past 3 weeks. The first lasted 2 weeks. The second did not work at all. Like wise the third did not work at all. I went to a proper electrical wholesale shop and purchased the same transformer. I was told there are various qualities and that my purchase was of the top quality. Worked first time and is still operating. The price at the wholesaler was £5.25 including VAT at Screwfix it was £6.59. Staff at Screwfix very helpful and I was refunded but what a terrible product quality."