B&B Electronics CL40 RS-232 to 20mA Current Loop Converter

The B&B Electronics CL40 is a passive RS-232 to 20mA current loop converter designed for connecting modern RS-232 serial devices to legacy 20mA current loop equipment. This compact converter enables reliable serial communication in industrial environments where current loop interfaces remain in use.

Key Features:

• Converts RS-232 signals to 20mA current loop (active and passive modes)
• Supports standard RS-232 serial communication
• Compact, rugged form factor suitable for industrial use
• No external power required for passive current loop operation
• Compatible with a wide range of serial devices including terminals, PLCs, and printers
• Simple plug-and-play installation with no configuration required

The CL40 is ideal for maintaining connectivity between modern computers and legacy industrial equipment, telecommunications systems, or data terminals that rely on 20mA current loop interfaces. B&B Electronics is a trusted manufacturer of serial communication and connectivity solutions for industrial applications.