Extend the life of serial equipment without redesigning the control stack. The Advantech EKI-1522I-CE converts two RS-232/422/485 serial connections into network-accessible device-server links, making it easier to reach PLCs, meters, controllers, and other field assets from modern infrastructure tools. Built for deployments where temperature tolerance matters, this model is suited to industrial spaces that push standard hardware beyond its comfort zone. That matters when uptime depends on stable access to equipment in cabinets, plant floors, utility rooms, or remote enclosures. For teams managing mixed-generation infrastructure, the value is straightforward: preserve the devices already qualified in the field while adding remote access, centralized visibility, and simpler service workflows. Instead of replacing reliable serial endpoints, you bring them into the network with a purpose-built bridge designed for operational environments. Choose this model when you need a compact serial device server for two ports and a deployment profile that fits industrial conditions rather than office-grade assumptions.