The HMC2101A-M combines the ease of a graphic HMI with PLC functionality in one unit and one software. Pair this with up to five HMC3 I/O modules, listed below, to make this HMI + PLC customized and cost effective for your application. Paired with free configuration software, the HMC2101A-M is one of our most affordable and functional HMC + PLC models.