Expandable Class I Division 2, HMI PLC combines the ease of a graphic HMI with PLC functionality in one unit and one software. Pair this with any HMC3 I/O modules, with free configuration software and IIoT Features, the HMC4043A-M product is best fitted for applications with a smaller number of I/O but still requiring Remote Access and Attractive Graphics. If you need more I/O, see our larger size units. Did you know that our HMI PLCs can communicate via Modbus to most PLCs or device, including Allen-Bradley PLCs?  Visit our support center for downloadable Controller Information Sheets. Compare HMC4043A-M with HMC2043A-M