Kosherswitch
HaGaon R’ Moishe Sternbuch shlit’aChief Rabbi/Ra'avad of the Eidah HaChareidis Yerushalayim. “Not gramma, better than gramma; Brocha that you should get the good to stay good, and get the bad to become good!” (1/5/2010 at his home)JerusalemVerbalWiki
I received the following letter from Rav Sternbuch's gabbai
I asked the Rav about this, he told me that he was asked about it, he wrote a letter via Rabbi Sigler on the issue, the Rav holds that it is not only chilul shaboss, but "akiras shaboss" to use this switch, the rav asked for his opinion to be publicized since he has been asked recently about this from numerous sources.