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The Allen-Bradley 1746-IO8 SLC 500 Digital Input/Output Combined Module is designed for seamless integration into any slot of the 1746 I/O chassis, barring slot 0. Featuring four 120V AC inputs and four relay contact outputs, the module supports an operating voltage range between 85-132V AC and accommodates both AC and DC outputs. It maintains efficient performance with a backplane current draw of 0.03A at 5V DC, outputs rated up to 65V AC and 125V DC, and handles 35ms and 45ms input/output signal delay times. Its robust design offers a 1.5A contact rating, an operational range of 0 to 60 °C, an operational shock rating of 30G, and a high noise immunity standard, ensuring reliable performance in demanding environments, with certification from CE, CSA, and C-UL.