No-Code Micro PLCs Built for the Edge Powering IIoT projects is easier than ever with ControlByWeb® Edge PLCs. Access your I/O through a simple web browser and configure logic using intuitive drop-down menus. THE all-purpose I/O solution for the Industrial Internet of Things – perfect for edge data and control. Shop Controls Contact Us Shop […]

No-Code Micro PLCs Built for the Edge

Powering IIoT projects is easier than ever with ControlByWeb® Edge PLCs. Access your I/O through a simple web browser and configure logic using intuitive drop-down menus.

THE all-purpose I/O solution for the Industrial Internet of Things – perfect for edge data and control.

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Trusted By:

Concho trusts ControlByWeb products.

Made in the USA Since 1999

Everything we manufacture is built and supported at our facility in northern Utah, USA. When you contact us, a knowledgeable, in-house staff member is on the other end.

Industry-Leading 5-Year Warranty

Decades of use in the field have proven our devices to be highly reliable. We use quality components that will stand up to your application.

Risk-Free Returns

We’re confident that our controllers will meet or exceed your expectations. If, for any reason, our devices aren’t the right fit, you can return them within the first 90 days.

Trusted By:

Dupont trusts ControlByWeb products.
Concho trusts ControlByWeb products.
ABB trusts ControlByWeb products.
Siemens trusts ControlByWeb products.
3M trusts ControlByWeb products.
Houston Methodist Leading Medicine trusts ControlByWeb products.
BigD trusts ControlByWeb products.
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Manufactured in the USA since 1999

We’ve been around a while, especially for an IIoT company. We’ve always been and will always be based and manufactured in the USA.

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Responsive, In-House Support

Supporting you is a top priority, so our US-based support staff is responsive, and our documentation is clear and on-point.

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Industry-Leading 5-Year Warranty

We don’t do anything unless it’s proven reliable. Everything from our circuit board components to our quality control is optimized for reliability.

X-410™ Programmable Edge Controller

Cellular 8-channel, programmable automation controller with 4 Digital Inputs and 4 Relays to manage a wide variety of applications.

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X-401™ Dual Relay and Input Module

Cellular 4-channel IIoT module built for the edge, with 2 Independent Relays and 2 Digital Inputs for simple data acquisition and control.

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WebRelay™ Single Relay & Input Module

Simple 2-channel cellular controller with 1 Digital Input and 1 Relay ideal for dry contact monitoring and simple relay control.

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Now available on the X-410, X-401, and the WebRelay!

  • More monitoring and control in more places
  • Networking flexibility to fit your application
  • Failover mode for maximum redundancy
  • ControlByWeb Cloud compatible

ControlByWeb relays have a built-in web interface that makes setup and programming simpler than legacy I/O systems. The Task Builder lets you program conditional and scheduled logic, without code, to easily control relaysdata loggingemail alertsModbus registersand more through simple drop‐down menus. Most devices include a BASIC interpreter for more advanced functionality.

X-410™ Live Demo

For your convenience, we have set up a live X-410 unit for testing and evaluation. By clicking the links below you have full access to this live unit. You can make changes to the configuration and settings through the setup pages and you can control X-410 through its control page. The control page allows you to change the state of the relay and view the current state of the input.

Username: admin

Password: webrelay

X-410 Firmware Monitor Example

ControlByWeb devices are known for their flexibility, and that extends to industrial platforms and protocols. Take your IIoT projects to the next level by integrating our devices into your preferred workflow.

ControlByWeb devices are known for their flexibility, and that extends to industrial platforms and protocols. Take your IIoT projects to the next level by integrating our devices into your preferred workflow.

Every PLC and relay running the 400 Series firmware includes a robust set of features right out of the box. Easily set up notifications, extend your I/O with P2P networking, and build dashboards and data logs in a few clicks.

  • Email & SMS Notifications
  • P2P Mesh Communication
  • Data Logging
  • Industrial Security
  • Dashboards
  • Optional Cloud Compatibility
  • And Much More

"They are bulletproof."

Rated 5.0 out of 5
May 4, 2020

“Reliability and versatility. In the 6 or 7 years I’ve been installing the relays there has never been a failure so I feel they are bulletproof. The list of applications is extensive.”

Nicholas Tcherniavsky

"Any field data ... in a hot minute!"

Rated 5.0 out of 5
January 3, 2024

“A built-in web server, data via XML, SNMP, and email services. I can take any field data and access it with backend IT systems in a hot minute!”

Dan Faille

"I have never been disappointed."

Rated 5.0 out of 5
January 4, 2024

“It’s very professional on all levels from support through to build quality. I have been using CBW hardware for nearly 15 years and I have never been disappointed.”

David Johnstone
X-410 Web-Enabled Industrial Controller
X-410™ Programmable Edge Controller

This 8-channel, programmable automation controller has 4 Digital Inputs and 4 Relays to manage a wide variety of applications.

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x400 x400-c side by side (modular design)
X-400™ Modular Edge PLC with Cellular Option

Versatility and scalability combine with our expandable I/O platform with many available expansion modules and optional cellular connectivity.

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X-404 Modbus Master Controller
X-404™ Modbus Master Controller

Monitor up to 32 Modbus RS-485 devices and/or sensors. Ideal for remotely monitoring tank levels, generators, and power meters.

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X-WR-441
The Original WebRelay™

Deploy a simple, powerful solution with this programmable automation controller featuring a single digital input and relay.

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WebRelay Quad 4 Web-Controlled Relays
WebRelay-Quad™

Increase your I/O capability with the same versatile, powerful platform as the WebRelay combined with 4 electromechanical relays.

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X-410 Web-Enabled Industrial Controller
X-410™ Programmable Edge Controller

Unlock incredible flexibility with 4 digital inputs, 4 relays, and software that allows conditional logic without any coding required.

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Systems Integrators and Controls Engineers use our products around the world in a massive variety of industries and applications.

We have been innovating in the Industrial Internet of Things (IIoT) for over 20 years. Our founder combined his expertise in electrical engineering and remote communications, founding the company in 1999 to provide systems integration, instrumentation, and controls. In 2005, we switched to designing and manufacturing highly reliable, easy-to-use, remotely accessible, and extremely flexible I/O control modules. We’ve never looked back.

"ControlByWeb has really taken what's possible to another level."

Rated 5.0 out of 5
March 8, 2024

“I claim myself to be an automation junkie, and ControlByWeb has really taken what’s possible to another level. I’ve yet to concoct a scheme that ControlByWeb hasn’t brought to reality.”

Joe Sharp

"Simple ... reliable ... and fantastic support."

Rated 5.0 out of 5
February 13, 2024

“Simple to set up, extremely reliable, and fantastic support.”

Daniel Dismukes

"The quality of the product is everything."

Rated 5.0 out of 5
February 13, 2024

“They are well designed, the quality of the product is everything it should be and they solve problems that other products can not.”

Frank Kiernan

"Ease of programming ... compared to Allen Bradley."

Rated 5.0 out of 5
February 13, 2024

“I like the ease of programming and web interface compared to the Allen Bradley plc’s I use at work. When I have an issue I can’t figure out, the technical staff has always steered me in the correct direction.”

Phillip Romley

"Easy setup ... super reliable. "

"Easy to setup, great flexibility and super reliable."

Nick Barron

"Russel S was a great help! "

"They work! Also have emailed for support a few times. Russell S was a great help! Thanks"

Wesley Jacobs

"Easy to program. "

"Modular, easy to program - customise"

Robert J. Honders Sr.

"Products ... created to solve a need. "

"Products that are created to solve a need and not products looking for a need."

John Canfield

"All ControlByWeb Products I have used are very flexible. "

"They are reliable and that is a super plus, they work well and that is a plus, they talk modbus and that makes my job easier. So far all control by web products I have used are very flexible, I have units talking modbus to serious control systems and HMI's, not to mention these units are 5 plus years old and work non stop, QUALITY!"

John Escobar

"Reliable and easily accessible "

"They are easy to set up, reliable and easily accessible."

Jerome List

"Low failure rate and also easy to use. "

"The quality is stable and reliable, and with low failure rate and also easy to use."

Alan Tang

"Great to work with, fairly simple. "

"So far they have been great to work with, fairly simple even for beginners like me."

Leo Guerrero

"Brilliantly easy to setup ... current technology unlike many others. "

"Brilliantly easy to set up and use. Keeps up with current technology unlike many others."

Myles Russell

"Found setting up the X-410 very easy. "

"I am not very good with computers, but have found setting up the X-410 very easy."

Kevin Craig

"The flexibility is only limited by your imagination! "

"Have used your products since 2015 and am very pleased with the performance and reliability. The X-600M line has been an integral part of our grain handling facility. We would not want to be without the automation, control and monitoring it provides. The automation saves us an employee to do other tasks as a direct result of the technology. The flexibility is only limited by your imagination!"

Tom Jennen

"Ease of Programming ... compared to Allen Bradley. "

"I like the ease of programming and web interface compared to the Allen Bradley plc's I use at work. When I have an issue I can't figure out, the technical staff has always steered me in the correct direction."

Phillip Romley

"I plugin them in and they work. "

"I plug them in and they work. Programming is straight forward, and documentation is good."

Joe Siepka

"Solid customer support before and after purchase. "

"Easy to configure, solid documentation, solid customer support before and after purchase"

Gene Bohn

"Cost-effectively and proactively do things ... one step ahead of disaster. "

"We have numerous X310 units installed that monitor and control heat systems at remote properties. They have been in place for about 5 years and operate flawlessly. They are a critical part of our ability to cost-effectively and proactively do things that are one step ahead of disasters."

J. Tar

"Easy to use interface. "

"Simple and easy to use interface. Products work without having to power cycle or troubleshoot."

Tyler Sinclair

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