The Allen-Bradley 1756-L55M13 is a Series A ControlLogix 5555 controller featuring 1.5 Mbytes of data and logic memory, supplemented by 208 kbytes of I/O memory, enabling robust data management within a compact unit weighing 12.5 oz. It supports versatile communication protocols including DeviceNet, ControlNet, Ethernet/IP, and more, ensuring seamless integration into diverse industrial networks. This open-style controller, designed for demanding environments, operates within a temperature range of 0 to 60 degrees Celsius, boasts 19.1 BTU/hr thermal dissipation, and offers a 707V DC isolation voltage capacity, making it suitable for redundant controller systems within the same ControlNet network.