B&B Electronics CL20 RS-232 to Current Loop Converter

The B&B Electronics CL20 is a passive RS-232 to 20mA current loop converter designed to extend serial communication over longer distances where standard RS-232 signals would degrade. Current loop interfaces are commonly used in industrial environments to connect legacy equipment, PLCs, and serial devices over extended cable runs with improved noise immunity.

Key Features:

• Converts RS-232 signals to 20mA current loop (active/passive selectable)
• Supports full-duplex serial communication
• Ideal for connecting legacy industrial equipment and serial terminals
• Improved noise immunity over standard RS-232 for long cable runs
• Compact form factor for easy integration
• No external power required in passive mode

The CL20 is well-suited for industrial automation, data acquisition, and any application requiring reliable serial communication in electrically noisy environments. It provides a straightforward, cost-effective solution for interfacing modern RS-232 equipment with current loop-based legacy systems.