ICPCON I-7520A CR is an interface converter that converts RS-232 signals to RS-422 and RS-485 signals. This converter is designed to provide reliable serial communication, especially in harsh industrial environments. Its built-in isolation feature prevents electrical noise and voltage surges, protecting the devices and the data line. With the RS-485 standard, data can be transmitted from a single master device to multiple devices, establishing a stable connection over long distances.