B&B Electronics CL223 Current Loop to RS-232 Converter

The B&B Electronics CL223 is a current loop to RS-232 level converter designed to interface 20mA current loop serial devices with standard RS-232 equipment. It allows legacy current loop peripherals — such as older terminals, printers, and industrial instrumentation — to communicate seamlessly with modern RS-232 serial ports.

Key Features:

• Converts 20mA current loop signals to RS-232 voltage levels
• Supports passive and active current loop configurations
• Compact, industrial-grade design suitable for panel or DIN rail mounting
• No external power required for passive loop operation
• Rugged construction for reliable use in industrial environments
• Bi-directional data conversion on transmit and receive channels

The CL223 is ideal for system integrators and engineers needing to connect current loop legacy equipment to modern PC serial ports or RS-232-based controllers without replacing existing hardware.