B&B Electronics CL212 Current Loop to RS-232 Converter

The B&B Electronics CL212 is a passive current loop to RS-232 interface converter designed for connecting current loop serial devices to RS-232 ports. This compact converter enables communication between legacy current loop equipment and modern RS-232 interfaces, making it ideal for industrial, commercial, and data acquisition applications.

Key Features:

• Converts current loop signals to RS-232 voltage levels
• Passive design requires no external power supply
• Compatible with 20mA current loop devices
• Supports standard serial baud rates
• Compact, rugged enclosure suitable for industrial environments
• Simple plug-and-play installation with no configuration required

The CL212 is an essential interface solution for integrating older current loop peripherals — such as terminals, printers, and industrial sensors — with contemporary RS-232 serial equipment. Its passive circuitry draws power directly from the host RS-232 port, eliminating the need for an additional power source.