may control water flow temperature according to the teachings herein water control module 10 is preferably battery powered with a batter access port 34 as shown in fig2 d also an electrically conductive contact plate 36 creates an electrically communicative connection between sensor 32 integral with shower head 13 and water control module 10 water control module 10 may also be attached with shower head 13 by various methods such as mechanical fasteners magnets or other mechanisms as those of skill in the art appreciate fig2 a shows one embodiment where a filter 36 is integrated into shower head 13 or some portion of water plumbing 13 to filter unwanted substances e g chlorine metallic substances and other odor causing substances in water flowing through shower head 13 filter 36 may be accessed through compartment door 38 for periodic replacement thereof or for removal if no filtering is desired mode button 24 of fig1 b may effect certain functions on water control module 10 mode button 24 for example may select 1 a locking mode to lock the current user settings e g desired water temperature on water control module 10 2 a water temperature mode for selecting a desired water temperature manually with magnitude button 18 or from pre set water temperature ranges 3 a water flow spray characteristic or 4 a timer mode to set a timer e g count up or down for timing the duration of water flow the duration of water flow at a desired temperature and.