Knitronix sensors for the presence of liquids are fabrics that react to the presence of
liquids by changing their electrical status. An extremely small quantity of liquid changes
their status from not conductive to conductive. Water contained in a bottle cap (4ml) is
enough to trigger this sensor almost immediately (1 sec).
It is possible to produce this
sensor so that it can cover large surfaces to monitor water leakages from roofs or tanks.