B&B Electronics CL222 Current Loop to RS-232 Converter

The B&B Electronics CL222 is a current loop to RS-232 serial interface converter designed for reliable serial data communication between legacy current loop devices and modern RS-232 equipment. Ideal for industrial, automation, and data acquisition environments where older 20mA current loop peripherals need to interface with contemporary systems.

Key Features:

• Converts 20mA current loop signals to standard RS-232 serial communication
• Supports both active and passive current loop configurations
• Compact, DIN-rail or panel-mountable enclosure for flexible installation
• Designed for reliable operation in industrial environments
• No external power required for active loop configurations
• Manufactured by B&B Electronics (Advantech B+B SmartWorx), a trusted leader in serial communication solutions

The CL222 is a proven solution for connecting teletypewriter-era and legacy industrial devices — such as older printers, terminals, and PLCs — to RS-232 ports on modern computers and controllers, extending the usable life of existing equipment without costly upgrades.