The Endress Hauser RN221N-C1 is an active barrier designed for process transmitters, providing a reliable 4-20mA output signal. This device supports loop current functionality and can operate with a loop supply ranging from 20 to 250 VAC/DC. It ensures a 1:1 signal transmission and is fully HART transparent, making it compatible with advanced communication protocols. The unit features a single channel and is compact, with a 17.5mm width, allowing for easy installation on a DIN rail. This high-quality component is available through BSP Automation, offering a dependable solution for process signal isolation and protection.