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The Allen-Bradley 1771-M1 Stepper Controller Motor Module is a crucial element of the 1771-QA Stepper Motor Positioning Assembly, offering sophisticated programmable control for various stepper motors within a Programmable Controller system. Occupying a single slot on the 1771 I/O chassis, this module can efficiently manage up to three pulse output expander modules across three axes with a maximum backplane current draw of 1.75A. Engineered for resilience, it operates in a broad temperature range of 5°C to 60°C with a relative humidity tolerance of 5-95% without condensation, while capable of withstanding extreme storage temperatures from -40°C to 85°C.