Readable article about the S.USV pi advanced in the current issue of the Raspberry Pi Geek magazine. According to editor Christoph Langner, the tested S.USV pi advanced impressed in practice and worked without any problems.

Also available online http://www.raspberry-pi-geek.de/Magazin/2016/01/Seprotronic-S.USV-fuer-Notstrom-und-praezise-Zeit