Abstract: A water filter device for filtering water for supply, consists of an outer housing, a general water inlet through the housing, a mechanical filter within the housing, a carbon filter within the housing and a general water outlet through the housing, the filter device providing a flow path from the general water inlet, through the mechanical filter and the carbon filter to the general water outlet. The water filter device further includes a secondary water inlet through the housing between the mechanical filter and the carbon filter, to provide a second flow path from the secondary water inlet through the carbon filter to the general water outlet, the second flow path thus bypassing the mechanical filter.

Abstract: A smart socket has an off setting, an on setting, and a manual switch to switch manually between the off setting and the on setting. An automatic switch mode provides for switching automatically between the off setting and the on setting, based on time and/or on sensor input. The socket also has a Sabbath mode, wherein the manual switch is disabled and the automatic switching is based on time or on a predetermined set of sensors, wherein the smart socket is configured to enter the Sabbath mode based on Sabbaths and/or festivals using the Hebrew calendar and locally calculated daylight times.