The MTL GECMA HMI workstations have been expanded with thin client (TC) and personal computer (PC) versions. The TC and PC versions complement the remote terminal (RT), which has a modular design. These next-generation HMIs are approved to global hazardous certification for Zone 1 environments. The TC version is designed for virtualization applications such as batch control. The workstation works with a client server in the safe room across a LAN. Users can control up to 255 HMIs from a single server. The stand-alone PC version works across the LAN and is designed for applications with high computing power demand.