Anyone ever seen this device ?

[Madman]

Browsing Ebay, I came across this item. I have never heard of it. It sounds interesting, but at $245.00, I'm not that interested.

http://www.ebay.com/itm/120865512967?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

 

[tramcar trev]

Hmmm yes. I'm sure if you had a look through the many "model Railway electronic circuits" you would find one that could be made....