In order to enhance passenger safety, there are multiple systems on trains such as HVAC, lighting control, door control, and fire detectors that require reliable remote I/O to control system operations and monitor the status of devices. Thus far, 580 of Moxa’s ioLogik E1500 Series remote I/Os have provided reliable onboard condition monitoring for HVAC and lighting systems on several trains in Germany. The rugged metal case of our ioLogik E1500 Series met the relevant portions of the EN 50155 standard and the PCBA coating ensured that the product was able to withstand harsh onboard environments. In addition, the channel-to-channel isolation on the DI inputs protected data communication from unexpected surges.