The ATENA addressable panel is supplied as standard with a loop and can be expanded with a maximum of 3 additional loops by means of expansion card 41ECL020 with one loop. Up to 250 addressed devices (detectors, buttons, I/O modules, sirens etc.), divided into a maximum of 96 zones in total, can be connected to each loop. This panel displays all indications and commands on the front in compliance with the requirements set out by standard EN54-2, by means of LED light signals and the 320x240 pixel LCD Touch-screen display.