Unit made by AGUILERA™ ELECTRÓNICA in accordance with EN 54-17:2004 standard. Microprocessed unit which is inserted in the loop of the algorithmic system, maximum 23 devices, determinated by EN54-14 standard, creating sectors. Its functions is to control the current that flow by the loop and if it raise, surpassing parameters that are previously programmed, open the line, insulating the rest of the loop to continue is functioning. When the anomaly desapears the system us automatically restored for normal functioning. Bidirectional current control. Mounted in ABS box of 105 x 82 x 25mm.