B&B Electronics CL203 RS-232 to Current Loop Converter

The B&B Electronics CL203 is a serial interface converter designed to bridge RS-232 signals and current loop (20mA) communication. Current loop interfaces are commonly used in industrial environments, legacy terminals, printers, and data acquisition systems where long-distance serial transmission and noise immunity are required.

Key Features:

• Converts RS-232 signals to 20mA current loop and vice versa
• Supports both active and passive current loop configurations
• Designed for industrial and legacy serial communication applications
• Compact form factor for easy integration into existing systems
• Compatible with standard RS-232 DTE and DCE devices
• No external power source required for active loop operation

The CL203 is ideal for connecting modern RS-232 equipment to older current loop devices such as teletypewriters, industrial controllers, and serial terminals. B&B Electronics Manufacturing Company (now Advantech B+B SmartWorx) has a long-standing reputation for reliable serial communication and industrial connectivity products.