[img]https://brickinsights.com/index.php/crop/teaser_compact/sets/7864-1.jpg[/img] 
[url="https://brickinsights.com/index.php/sets/7864-1"][b]7864-1 Transformer / Speed Controller 12V[/b][/url] 86 / 100  
[url="http://guide.lugnet.com/set/7864"][/url] 90 / 100  
[url="https://brickset.com/reviews/set-7864-1"][/url] 82 / 100