Overflow system for a fluid container

An overflow system for a fluid container having a wall and an overflow aperture defined in the wall, the overflow system comprising:

• a body securable to the wall of the container, over the overflow aperture, the body extending along a longitudinal axis and having a front face and a rear face, the rear face of the body being spaced-apart from the wall of the container to allow fluid communication between the container and the overflow aperture;
• a level sensor unit secured to the rear face of the body, the level sensor unit being configured for detecting the level of the liquid along the longitudinal axis of the body, wherein the level sensor unit includes at least one current source, an electrical circuit, and at least one current sensor for measuring at least one current intensity;
• and
• a control unit comprising a database including a predefined intensity or a predefined intensity range, wherein the control unit is operatively connected to the level sensor unit for determining a level of liquid, and wherein the control unit is configured to compare the at least one current intensity to the predefined intensity or the predefined intensity range and determine the level of liquid based on the comparison.