Abstract: A luminous and/or audible remote detector to indicate leakage of liquids in stationary tanks, such as for toilets and the like, comprising one or several pairs of electrodes installed at a certain level of the tank or inside the drain pipe of same. Each pair of electrodes being connected to a source of energy and to a lamp and/or bell located on a remote display board. Each pair of electrodes actuating as a normally open or closed switches depending if they are located above or below of the normal level of the liquid contained in said tank, which serves as conductor between said electrodes, producing the energizing of the lamp or bell connected to its circuit and indicating visually or audibly to a supervisor malfunctioning or leakage of liquid in the normal operation of said tank.