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The Allen-Bradley 1771-OWNA is a robust digital I/O module designed for compatibility with PLC-5 controllers, featuring 32 non-selectable normally-open electromechanical relay contacts. It accommodates voltage ratings of 24 to 138 Volts AC RMS and 24 to 125 Volts DC, with a maximum output capacity of 1 Amp per output and a total of 12 Amps per module, both subject to derating at temperatures above 45 degrees Celsius. Optimized for slots A1B to A4B within a 1771 chassis, this module provides stable connectivity with its 1000-foot interconnect cable capacity, operates efficiently within 32 to 140 degrees Fahrenheit, and maintains balanced power distribution while achieving a maximum power disbursement of 30 Watts per output.