Water metre consumption reductive. Daily 400 litres/90 gallons(English) of saving. He works without a trace! Simply only onto the water metre to do. I put the working idea under the hammer with a piece of practical implementation. 12 euros of maximum is the expense of an implementation. He is discreet function! The idea 400 euros of march the auction. Auction starting price 625 dollars/400 euros! www.smd.atw.hu wsw@freemail.hu