About CurryControls.com

What CurryControls.com is

CurryControls.com is independently registered, maintained, and operated by Eric Sullivan in his individual capacity.

The website currently published at CurryControls.com contains new technical and project content managed and published by Eric Sullivan as an independent technical knowledge and project resource. The current website is not presented as, and should not be understood to be, the former website of Curry Controls Company or a continuation of that company's website or business.

The intended audience is controls engineers, systems integrators, PLC programmers, SCADA developers, instrumentation technicians, electrical contractors, panel builders, water and wastewater operators, and the municipal staff who live with these systems every day. Content is organized as a deep taxonomy rather than a blog feed, because reference material is looked up rather than read in sequence.

Ownership and registration history

A prior registration of CurryControls.com existed. That prior registration later expired, completed the applicable deletion process, and the domain thereafter became publicly available for new registration.

Current domain registration

The current registration of CurryControls.com was created on April 13, 2025 after the prior registration had expired, completed the deletion process, and the domain became publicly available for registration. Eric Sullivan independently registered CurryControls.com in 2025 in his individual capacity. The current registration is a new registration, not a transfer of the prior registration to Eric Sullivan.

New site content

The website currently published at CurryControls.com contains new technical and project content managed and published by Eric Sullivan as an independent technical knowledge and project resource. The current website is not presented as, and should not be understood to be, the former website of Curry Controls Company or a continuation of that company's website or business.

Eric Sullivan and Curry Controls Company

Curry Controls Company was acquired by Revere Control Systems, Inc. in 2021.

Eric Sullivan was formerly employed by Curry Controls Company, and his employment with that company ended in 2021. References on CurryControls.com to Curry Controls Company or to Eric Sullivan's work with that company are historical in nature and do not mean that CurryControls.com is operated by or on behalf of Curry Controls Company.

Eric Sullivan worked with Curry Controls Company for more than 25 years before his employment with that company ended in 2021. His career has covered electrical systems, industrial controls, automation, project management, PLC and SCADA systems, instrumentation, and water and wastewater control applications.

Eric Sullivan's current employment

Eric Sullivan is currently employed by General Control Systems, Inc. His employment with General Control Systems, Inc. is separate from CurryControls.com. CurryControls.com is not owned, operated, sponsored, endorsed, authorized, reviewed, or published by General Control Systems, Inc., and nothing on CurryControls.com is published on behalf of General Control Systems, Inc.

General Control Systems, Inc. is not affiliated with, and is not a successor to, Curry Controls Company, Revere Control Systems, Inc., or S.J. Electro Systems, LLC.

Ownership, Registration and Non-Affiliation

CurryControls.com is independently registered, maintained, and operated by Eric Sullivan in his individual capacity.

The prior registration of CurryControls.com expired, completed the domain deletion process, and became available for new registration. Eric Sullivan independently registered CurryControls.com in 2025 in his individual capacity. The current registration is a new registration and was not transferred to Eric Sullivan by Curry Controls Company, Revere Control Systems, Inc., S.J. Electro Systems, LLC, or General Control Systems, Inc.

The website currently published at CurryControls.com contains new technical and project content managed and published by Eric Sullivan as an independent technical knowledge and project resource. The current website is not presented as, and should not be understood to be, the former website of Curry Controls Company or a continuation of that company's website or business.

Curry Controls Company was acquired by Revere Control Systems, Inc. in 2021.

Eric Sullivan was formerly employed by Curry Controls Company, and his employment with that company ended in 2021. References on CurryControls.com to Curry Controls Company or to Eric Sullivan's work with that company are historical in nature and do not mean that CurryControls.com is operated by or on behalf of Curry Controls Company.

CurryControls.com is not owned, operated, sponsored, endorsed, authorized, or maintained by Curry Controls Company, Revere Control Systems, Inc., S.J. Electro Systems, LLC, or General Control Systems, Inc.

CurryControls.com is not the official website, successor, continuation, or current operating business of Curry Controls Company, Revere Control Systems, Inc., or S.J. Electro Systems, LLC.

Eric Sullivan is currently employed by General Control Systems, Inc. His employment with General Control Systems, Inc. is separate from CurryControls.com. CurryControls.com is not owned, operated, sponsored, endorsed, authorized, reviewed, or published by General Control Systems, Inc., and nothing on CurryControls.com is published on behalf of General Control Systems, Inc.

General Control Systems, Inc. is not affiliated with, and is not a successor to, Curry Controls Company, Revere Control Systems, Inc., or S.J. Electro Systems, LLC.

References to Curry Controls Company, Revere Control Systems, Inc., S.J. Electro Systems, LLC, General Control Systems, Inc., manufacturers, products, software platforms, standards organizations, or other organizations are provided for identification, historical context, technical discussion, or informational purposes and do not imply sponsorship, endorsement, authorization, or affiliation unless expressly stated.

Use of CurryControls.com as the domain name should not be understood as a representation that the current website is operated by, affiliated with, sponsored by, endorsed by, or authorized by Curry Controls Company, Revere Control Systems, Inc., S.J. Electro Systems, LLC, or General Control Systems, Inc.

Ownership & Non-Affiliation

Purpose of this technical knowledge site

CurryControls.com is being developed as an independent technical knowledge resource focused on control systems, PLC programming, SCADA, HMI systems, instrumentation, control panels, industrial networking, telemetry, OT cybersecurity, troubleshooting, and water and wastewater automation.

• Each page leads with a direct answer, then key points, then the detail.
• Procedures are written to be worked through with the equipment in front of you.
• Troubleshooting is organized by observable symptom rather than by product.
• Every calculator shows its formula, its assumptions, and its arithmetic so a result can be reproduced and checked.
• Published and updated dates are shown, because reference material goes stale.
• Everything published here must be independently verified by the reader before it is relied upon.

Personal projects

These are personal projects of Eric Sullivan. Their appearance on CurryControls.com does not indicate that they are products, services, publications, or projects of Curry Controls Company, Revere Control Systems, Inc., S.J. Electro Systems, LLC, or General Control Systems, Inc.

See the personal projects

Information and calculator disclaimer

All information and calculations must be independently verified by the user before being relied upon or applied to actual equipment, systems, designs, installations, programs, processes, or projects.

Read the full Information & Calculator Disclaimer