The MxPro 4 is equipped with an internal loop driver card and two on-board sounder circuits. The control panel features an LCD menu-driven graphical interface, employing dual flash-based microprocessor technology powered by a robust 24V DC, 2 Amp High Efficiency Switched Mode power supply and charger, approved to meet EN54 parts 2 and 4 standards. This system is conveniently on-site programmable through the on-board alphanumeric keypad or PC-Net Configuration tools.