B&B Electronics CL291 Current Loop to RS-232 Converter

The B&B Electronics CL291 is a current loop to RS-232 serial interface converter designed for connecting legacy current loop devices to modern RS-232 serial ports. This compact, reliable converter bridges the gap between older industrial equipment using 20mA current loop interfaces and contemporary computer systems or serial communication hardware.

Key Features:

• Converts 20mA current loop signals to RS-232 serial communication standard
• Supports both active and passive current loop configurations
• Compact form factor suitable for panel mounting or desktop use
• Rugged industrial-grade construction for reliable operation in demanding environments
• No external power supply required in active loop mode
• Compatible with a wide range of legacy industrial, point-of-sale, and data acquisition equipment

The CL291 is ideal for maintaining communication with older terminals, printers, data loggers, and industrial controllers that rely on current loop interfaces, extending the useful life of legacy equipment without costly replacements.