The Allen-Bradley 1756-L72K by Rockwell Automation is a ControlLogix processor module known for its robust performance and capacity. With a 4 MB user memory and support for up to 128,000 digital and 4,000 analog I/O, it is a powerhouse for industrial control systems. This module consumes minimal power and offers an open-style enclosure without isolation. Manufacturer Rockwell Automation Brand Allen-Bradley Part Number/Catalog No. 1756-L72K Series ControlLogix Module Type Processor Module I-O Memory 0.98 MB User Memory 4 MB Maximum I-O 128,000 Maximum Analog I-O 4,000 Maximum Digital I-O 128,000 Current Draw (1.2 Volts DC) 5 Miliamperes Current Draw (5.1 Volts DC) 800 milliamps Power Dissipation 2.5 Watts Thermal Dissipation 8.5 BTU per hour Isolation Voltage 30 Volts Continuous Enclosure None (Open-Style)