B&B Electronics CL242 RS-232 to Current Loop Converter

The B&B Electronics CL242 is a passive RS-232 to 20mA current loop converter designed to extend serial communications over long distances and interface modern RS-232 equipment with legacy current loop devices. Current loop interfaces are widely used in industrial automation, point-of-sale systems, and older terminal equipment where reliable long-distance serial data transmission is required.

Key Features:

• Converts RS-232 signals to 20mA active or passive current loop
• Supports bidirectional serial data communication
• No external power required for passive loop configurations
• Compatible with standard RS-232 serial ports (DB9/DB25)
• Compact form factor suitable for panel or desktop use
• Industrial-grade construction for reliable operation
• Supports standard baud rates for legacy device compatibility

The CL242 is ideal for connecting RS-232 serial devices to printers, terminals, PLCs, and other industrial equipment that use a 20mA current loop interface. Its plug-and-play design simplifies integration into existing serial communication infrastructures without the need for additional drivers or software.