Alan Demlow: "They should make one for 9V!!!"
Frank Buiting: "With some modifications usable in 9V, see: http://news.lugnet.com/trains/?n=4181"
Reinhard "Ben" Beneke: "cool supplementary for 12V train layouts"
Dirk Bauer: "Common electric feature for 12V tracks, like 7858 and 7859."
Pier Andreatini: "1 BOXED AND 1 MISB from 1980!!!"