The Allen-Bradley 1756-L85EXT ControlLogix-XT Controller, part of the ControlLogix-XT 5580 series, is designed for high-efficiency operations in demanding environments. It offers a substantial 40 MB of user memory capable of handling up to 128,000 digital I/O points and 4,000 analog I/O points, with an optional pre-installed 2 GB nonvolatile memory. Engineered to withstand harsh conditions, it operates effectively in temperatures ranging from -25 to 70 degrees Celsius and supports vibration up to 2 g and shock up to 30 g. Boasting an open-style enclosure, this controller delivers a thermal dissipation of 21.2 BTU per hour while ensuring robust communication and control functions that safeguard against corrosive environments.