Victron Interface MK2.2b — VE.Bus to RS232 (Industrial / OEM)

An isolated VE.Bus-to-RS232 link for serial-based configuration. The MK2.2b connects a Victron VE.Bus device to a computer or PLC through an RS232 serial port — the serial counterpart to the USB MK-series interfaces. It's typically used in industrial, OEM, and data-communication setups where RS232 is the host connection.

• What it does. Bridges a VE.Bus port to an RS232 (DB9 serial) port for configuration and data communication.
• Galvanically isolated. Keeps the host serial side electrically separated from the DC system.
• No serial port on your computer? Add the RS232-to-USB converter to use it on a modern laptop.
• For straightforward USB setup, consider the MK3-USB instead. Most installers configuring a VE.Bus inverter/charger from a laptop use the MK3-USB; the MK2.2b is for RS232/PLC and OEM workflows.
• Genuine Victron Energy interface — full 5-year Victron warranty.

Pair with the RS232-to-USB converter for USB hosts, or step up to the MK3-USB for plug-and-play USB. Book a system consultation for help choosing.

Why buy your Victron interfaces from Blue Marine

• Authorized Victron Energy Distributor — full Victron line in stock.
• Free US shipping over $49 from our Seattle warehouse.
• 60-day hassle-free returns.
• Local pickup available in Seattle, WA.
• System sizing help from ABYC-certified Advisors at support@bluemarine.com or (800) 628-6306.