B&B Electronics M4-39000 RS-232 to RS-485 Serial Converter

The B&B Electronics M4-39000 is a serial interface converter designed to bridge RS-232 and RS-485/RS-422 communication protocols. This compact, industrial-grade device enables reliable data transmission between equipment using different serial standards, making it ideal for factory automation, building controls, and data acquisition systems.

Key Features:

• Converts RS-232 signals to RS-485/RS-422 for extended communication distances
• Supports multi-drop network configurations for connecting multiple devices on a single bus
• Compact, DIN-rail or surface-mountable form factor for flexible installation
• Industrial-grade design for reliable performance in demanding environments
• Plug-and-play operation with no external power supply required (bus-powered)
• Automatic send data control (ASDC) for transparent half-duplex operation

The M4-39000 from B&B Electronics is a trusted solution for integrators and engineers who need to extend serial communication networks or interface legacy RS-232 equipment with modern RS-485 multi-drop bus systems.