Extend async RS232 devices beyond the traditional 50 ft limitation using CATx cables, achieving data rates up to 115.2 kbps over distances of 4000 ft. At maximum speeds of 115.2 kbps, you can connect your devices up to 4000 feet apart. This device must be used in pairs, making it perfect for various applications where RS-232 is required.

Utilize our 4-Wire SHM-C Async model to transmit data over even longer distances, up to 4 miles (6.4 km). Effortlessly run loopback tests by pressing a convenient front-panel button. The unit features a flip-top lid for quick DTE/DCE selection, ensuring ease of use in industrial applications, security systems, UNIX® environments, and HP® workstation connectivity.

Built-in transformer and optical isolation protect your data from electrical interference, providing reliable and secure communications.

• Extends RS232 connections up to 4000 ft using CATx cables
• Supports data rates up to 115.2 kbps
• Must be used in pairs for effective communication
• 4-Wire SHM-C model enables transmission up to 4 miles
• Front-panel button for easy loopback test initiation
• Flip-top lid for quick DTE/DCE selection
• Transformer and optical isolation for protection against interference