Available. The Mitsubishi A1SJ71UC24-R2 is a dedicated RS-232C serial communication interface module designed for the Mitsubishi A-Series PLC family, including models A1SJ and A1SJHCPU. This module enables point-to-point serial communication between the PLC and external devices such as HMI terminals, barcode readers, printers, or host computers using Mitsubishi's proprietary Melsec protocols. It supports baud rates from 300 to 19,200 bps and has a maximum transmission distance of 15 meters. The module features a 1:1 I/O allocation with 32 points, consuming 0.10A of current at 5V DC. Its compact dimensions are 130mm in height, 34.5mm in width, and 93.6mm in depth, with a weight of 0.22 kg. The A1SJ71UC24-R2 is UL, cUL, KC(EMC), and LR certified, ensuring compliance with international standards. Please note that this model has been discontinued as of September 2014, and its successor is the RJ71C24-R2.