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• Standards

Manufacturer Identifier

If you are designing open, interoperable devices to the LonMark Interoperability Guidelines but do not have a Manufacturer ID (MID), please complete and submit this form.

Standard Manufacturer IDs are assigned to manufacturers upon request when they join LonMark International and are then published by LonMark International so that the device manufacturer of a LonMark Certified device is easily identified. Standard Manufacturer IDs are never reused (never given by LonMark to another company).

If your company is not in the following list but is a LonMark Sponsor or Partner member, please mark the appropriate selection on the following form (see link below) to be issued a Standard MID. Temporary Manufacturer IDs are available to LonMark members or non-members upon request by completing this same form. Temporary MIDs are not guaranteed to be unique and they are not listed in the Master List of MIDs. Likewise, they cannot be used for LonMark Certification. However, they can be used in development tools to provide some level of differentiating manufacturers.


Access the temporary MID Request Form.

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  Technical Resources

Articles, information,
guidelines, specifications,
and downloadable files for
LonMark Members, and the
entire LonWorks® community.