The invention relates to a moisture monitoring system suitable for monitoring liquid leakage of a wearer and, in turn, for monitoring wetting of a diaper, nappy, incontinence pad or alike sanitary product, the system including: i) two or more than two electrodes each being supported in a spaced apart relationship and ii) a liquid permeable substrate between the electrodes, the liquid permeable substrate lacking or having a low capacity for holding or storing liquid, whereby in the event of initial liquid leakage, an electrical bridge connecting the electrodes can extend, at least in part, through the permeable substrate by liquid located on or in the permeable substrate, and subsequently liquid can drain from the permeable substrate so as to electrically disconnect the electrodes, and upon further liquid leakage, electrical connection between the electrodes can be reformed.
