What is "kosherswitch"

The KosherSwitch (aka "Kosher Switch", "Shabbos switch", "Shabbat switch") is a patented wall switch marketed to the observant Jewish market and institutions servicing this market, as a means of controlling electricity on-demand on Shabbat and Jewish holidays in a manner that is permissible according to several Orthodox authorities, though others reject it. It is manufactured by KosherSwitch Technologies headquartered in New York City and invented by Andy Menashe Kalati.