WEINTEK WEINVIEW MT8121IE PLC 12.1 HMI Touch Screen replace MT8121X PC30 Feature: 12.1" 1024x768 TFT LCD, LED Backlight Fan-less Cooling System Built-in 128MB Flash Memory SD Card Slot for Extension of Storage One USB Host Port and one USB Client Port Com1 and Com3 RS-485 Built-in Isolation Com1 and Com3 RS-485 2W support MPI 187.5K, please use one at one time Built-in Power Isolation NEMA4/IP65 Compliant Front Panel