Flexible. Modular. Web-Enabled.
The X-400 is a great drop-in solution for flexible data capture and use. The modular design boosts I/O options with a variety of compatible expansion modules. Peer-to-peer networking with other ControlByWeb devices extends reach in physically challenging applications.
X-400 Features
- Simple Web-Based Dashboard
- No-Code Logic Builder
- Peer-to-Peer Communication
- Ethernet I/O Monitoring & Control
- 400 Series Platform
- Failover From Ethernet (X-400C Only)
X-400 Applications
- Building Automation & Access Control
- Process Control
- Remote/Field Monitoring & Control
- Dry Contact Monitoring/Notifications
- See more applications
Popular Expansion Modules for the X-400™ & X-400C™
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X-12S™ | 8 Relay Expansion Module
$179.99View Product This product has multiple variants. The options may be chosen on the product pageThe X-12S™ adds eight Form-A (SPST) relays to an X-400™ or X-600M™ controller, providing reliable low-current switching for industrial and OEM applications. Each relay is rated at 2.5A, with commons grouped in two banks for simplified wiring.
A removable terminal connector streamlines installation, while the ribbon cable connection supplies both power and communication from the host controller. Multiple X-12S™ modules can be added for scalable relay expansion in larger systems.8 Relays
Expansion Module for the X-400 or X-600M
[frequentlyBought ids="7635"]
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X-17S™ | 4 Relay, 4 Input Expansion Module
$179.99View Product This product has multiple variants. The options may be chosen on the product pageThe X-17S™ adds four Form-A (SPST) relays and four optically-isolated digital inputs to an X-400™ or X-600M™ controller, making it a versatile expansion option for both control and monitoring. Relays are designed for moderate load switching, while optical isolation ensures electrical separation between field equipment and low-voltage control circuits—improving safety and reducing interference.
Multiple X-17S™ modules can be connected via ribbon cable for power and communication, enabling scalable expansion. Typical applications include equipment control, alarm panel monitoring, pump or fan management, and facility automation.4 Relays
4 Digital Inputs
Expansion Module for the X-400 and X-600M
[frequentlyBought ids="7635,7798,34091"]
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X-18S™ | 10 High-Current Relay Expansion Module
$309.99View Product This product has multiple variants. The options may be chosen on the product pageThe X-18S™ adds ten high-current relays to an X-400™ or X-600M™ controller, each rated at 15A with Form-C (SPDT) contacts for maximum flexibility in switching. Connections are made directly to the relays through rugged ¼″ tab terminals, ensuring reliable performance in demanding environments.
Designed for industrial and OEM applications, the X-18S™ is ideal for controlling motors, pumps, fans, lighting, and other high-load equipment. Multiple modules can be connected to the host controller via ribbon cable for both power and communication, enabling scalable expansion for large systems.10 High Current Relays
Expansion Module for the X-400 and X-600M
[frequentlyBought ids="7635,7696"]
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X-22S™ | 8 Analog Input Expansion Module
$349.99View Product This product has multiple variants. The options may be chosen on the product pageThe X-22S™ adds eight high-resolution analog inputs to an X-400™ or X-600M™ controller, supporting multiple voltage ranges as well as 4–20mA current-loop sensors. This flexibility makes it ideal for integrating a wide range of industrial and process instrumentation.
Engineered for accuracy and reliability, the X-22S™ is well-suited for applications such as tank or bin level monitoring, flow and pressure measurement, and energy or environmental data acquisition. Multiple X-22S™ modules can be connected via ribbon cable to expand analog input capacity as needed.8 Analog Inputs
Expansion Module for the X-400™ or X-600M™
[frequentlyBought ids="7635,7916, 22960"]
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Cellular-Enabled I/O for Remote Monitoring
No WiFi Necessary
Cellular simplifies your installation and fits where no wired infrastructure exists. There’s no need for third-party resources or IT intervention—everything you need from a PLC is included with the X-400C.
Primary or Backup
With the X-400C, you have the option to use Ethernet as the primary connection to the network and cellular as a failover. This allows logging, remote access, and email alerts even if Ethernet fails.
Power Your Whole Setup
Expansion modules have a ribbon-cable expansion bus that allows for shared I/O among ControlByWeb devices. It only requires one cellular-enabled PLC to enable all connected I/O to operate wirelessly.
Powerful 400 Series Features
Integration Ready
We support HTTP GET, XML, JSON, SNMP, Modbus TCP/IP, and our Cloud API with more on the way.
No-Code Programmable Logic
Our intuitive Task Builder empowers you to build custom logic using drop-down menus in an if-this-then-that flow.
P2P Networking & Remote I/O
Devices can communicate through Peer-to-Peer (P2P) networking to share I/O among other ControlByWeb controllers, assign any device as master, set up multiple masters, and link remote inputs and relay control.
Email Notifications
Stay in control of operations with real-time monitoring. Add intelligence to your emails through programmable logic to instantly send notifications to the right people and eliminate false alarms.
Easy-to-Use Embedded UI
Our devices come with a simple embedded user interface that will enable you to easily monitor, manage, and control ControlByWeb PLCs from any standard web browser.
Data Logging
Enjoy scheduled and conditional logging with email and FTP log exports. Add the optional ControlByWeb Cloud for remote access and downloadable logs.
Cloud Compatible
Enhance your capabilities with the ControlByWeb Cloud. Gain enhanced features such as simplified remote device access, data logging, and advanced analytics.
Trusted Device Security
Our controllers have no built-in OS or file system, making them less prone to vulnerabilities. Third-party consultants and government agencies test the cybersecurity of our controllers.
IIoT Monitoring & Control
Access the device directly through an assigned IP address. Set up your network settings the way you want, to limit or allow remote access through the cloud.
