B&B Electronics CL04 Current Loop to RS-232 Serial Converter

The B&B Electronics CL04 is a 20mA current loop to RS-232 serial interface converter designed for connecting legacy current loop devices to modern RS-232 serial ports. This compact, passive converter enables reliable communication between industrial equipment, terminals, printers, and other serial devices that use the 20mA current loop standard.

Key Features:

• Converts 20mA current loop signals to RS-232 voltage levels
• Supports both active and passive current loop configurations
• Compact, rugged housing suitable for industrial environments
• No external power required for passive loop operation
• Designed for seamless integration with legacy serial equipment
• Manufactured by B&B Electronics (Advantech B+B SmartWorx), a trusted name in industrial serial connectivity

The CL04 is ideal for maintaining connectivity with older industrial terminals, point-of-sale equipment, data acquisition systems, and other devices that rely on the 20mA current loop communication standard. Its simple, reliable design makes it a cost-effective solution for bridging legacy and modern serial interfaces.