Skip to content

in your cart View Cart

Cart
Join
Login
Contact Us

About
Membership
- Join Modbus
Events
Modbus Forum
News
- News
- Newsletter
Directories
- Directory of General Members
- Companies with Tested Devices
Resources

Contact Us
Join
Login

Back to Member Directory

Deffner Elektro Elektrotechnik

Contact information may be available to logged in members.

Contact

85 Swanson Road
suite 135
Boxborough, Massachusetts 01719
United States

978.250.9847

Association Management Software

Copyright © 2026 - Modbus Organization. Legal

×

Membership & Account Access

Need To Create An Account?

If you are already a member, please set up and log in to your member account by clicking "Create an Account" below. This option is also for current individual members and staff of company members who need to login, but do not have a user account set up.

Once logged in, you can:

Update Your Profile
Register for Events
View & Pay Invoices

Create an Account

Applying for Membership?

Transform your automation capabilities by joining the Modbus Organization, the steward of the world's most widely adopted industrial communication protocol. Whether you're implementing new automation systems or optimizing existing infrastructure, membership provides the technical support, collaborative opportunities, and credibility boost your organization needs to stay competitive in today's interconnected industrial landscape. Join thousands of companies worldwide who rely on Modbus Organization membership to accelerate their automation success—because in industrial communication, standards matter, and leadership makes the difference.

View Membership Information