Yea, and there are options to convert the IQ-X into DC.
But for this, the IQ-X E would be cheaper - just the on/off-switch isn't available then.
IQ-X für Forumslader: Forumslader
http://www.forumslader.de/fileadmin/.../Manual_EN.pdf
http://www.forumslader.de/fileadmin/...st_english.pdf