# ControlByWeb: Home

> Powerful, micro PLCs for industrial automation\. Control, monitor via built\-in web interface\. Built\-in logic\. Open API\. No Licensing or Fees

Generated by Yoast SEO v27.5, this is an llms.txt file, meant for consumption by LLMs.

## Pages
- [Cellular](https://controlbyweb.com/cellular/): Our new cellular monitoring and control modules make your life easier\. When you need to deploy an IoT controller where no wired networking infrastructure exists, skip the third\-party program hardware and build from our popular X\-400 platform \- now with embedded cellular connectivity\. Remote monitoring and control has never been easier\.
- [Temperature Application](https://controlbyweb.com/applications/temperature/)
- [ControlByWeb 3 \- Split Test](https://controlbyweb.com/)
- [Distributors](https://controlbyweb.com/distributors/)
- [Security](https://controlbyweb.com/industries/security/)

## Posts
- [Video: Fast, Reliable SCADA Integration: Using ControlByWeb with Ignition via Modbus TCP ](https://controlbyweb.com/blog/ignition-scada-integration-via-modbus/): Watch just how fast it is to integrate ControlByWeb devices with Ignition using Modbus TCP
- [Integrating Remote Reboot into Your SCADA System: A Practical Guide for System Integrators](https://controlbyweb.com/remote-reboot/integrating-remote-reboot-into-your-scada/)
- [How Much Time and Money Does Remote Rebooting Really Save?](https://controlbyweb.com/remote-reboot/how-much-does-remote-rebooting-save/)
- [How Can You Remotely Reboot Devices Without a VPN or Port Forwarding?](https://controlbyweb.com/remote-reboot/remotely-reboot-without-vpn/)
- [Smarter Automation: Enhancing Your PLC System with ControlByWeb ](https://controlbyweb.com/blog/smarter-automation-enhancing-your-plc-system-with-controlbyweb/)

## Products
- [WebRelay™ \| Single Relay \& Input Module](https://controlbyweb.com/webrelay/): \<section id="longDescription"\>The latest WebRelay™ is engineered for industrial reliability and flexible deployment\. With updated firmware and optional Wi\-Fi or cellular connectivity, it delivers robust remote relay control at the edge of your system\. \<br /\>A streamlined browser\-based interface and open REST API provide seamless integration with PLCs, SCADA platforms, and IIoT applications—without licensing fees or vendor lock\-in\. Whether deployed as a stand\-alone controller or part of a larger automation network, WebRelay™ offers dependable performance in commercial, industrial, and OEM environments\.\<strong\> Note\</strong\>: This is the updated WebRelay\. See the \<a style="text\-decoration: underline;" href="/original\-webrelay"\>original WebRelay here\</a\>\.\</section\>
\<p\> \</p\>
\<ul\>
\<li\>1 Relay \& 1 Digital Input\</li\>
\</ul\>
\<p\> \</p\>
\<p\> \</p\>
\<ul\>
\<li\>Ethernet, Cellular, or WiFi\</li\>
\</ul\>
\<p\> \</p\>
\<p\> \</p\>
\<ul\>
\<li\>9\-28VDC and/or POE\</li\>
\</ul\>
\<p\> \</p\>
\<section id="longerDescription" style="line\-height: normal; margin: 4% 0 0 0;"\>\<b\>Cellular and WiFi are Now Available\.\</b\> Note that X\-WR\-441CW and X\-WR\-441W models include cellular and WiFi capability respectively, which allows for more flexibility for your application\. \<br /\>\<b\>Global Cellular Coverage\.\</b\> Discuss international cellular options with a \<a href="/contact/"\>sales engineer\</a\>\.\</section\>
\<div id="longerDescription"\> \</div\>
\<p id="longDescription"\>\[frequentlyBought ids="7624,7621,7798,34091"\]\</p\>
- [GRI\-4402\-A Industrial, Wide\-Gap Magnetic Sensor](https://controlbyweb.com/accessories/industrial-magnetic-contact-sensor/): \<section id="longDescription"\>Monitor chain link gates, safes, walk\-in freezer, doors, etc\. These rugged industrial contact sensors are triggered by the proximity of a magnetic field \(magnet included\)\. They are weather resistant and offer a wide temperature operating range \(\-40F to 257F\)\. They come with a 36" armored cable to resist vandalism\.\</section\>
\<p\>\<em\>Mountable up to 2 1/2" apart\</em\>\</p\>
\<p\>\<em\>Contact Form: C\</em\>\</p\>
\<p\>\<em\>Circuit Types: Open/Closed\</em\>\</p\>
\<p\>\<em\>3 ft Armored Cable\</em\>\</p\>
\<p id="longDescription"\>\[frequentlyBought ids="6908,6846,6652"\]\</p\>
- [X\-412™ \| 4‐Channel Relay \& Analog Input Module](https://controlbyweb.com/x412/): \<section id="longDescription"\>The X\-412™ is an Ethernet\-based I/O controller with four high\-resolution analog inputs and four relays, engineered for precise monitoring in industrial and OEM applications\. Its browser\-based interface and embedded GUI logic builder enable event\-driven automation, scheduling, and data acquisition—without external software or licensing fees\. \<br /\>Functions as a stand\-alone monitoring device with support for open protocols \(Modbus, MQTT, SNMP, REST\), the X\-412™ integrates seamlessly into SCADA and PLC systems, providing a reliable and scalable solution for process monitoring, equipment control, and facility automation\.\</section\>

\<ul\>
\<li\>4 Relays\</li\>
\<li\>4 Analog Inputs\</li\>
\</ul\>

\<section id="longerDescription" style="line\-height: normal; margin: 4% 0 0 0;"\>\<b\>New Cellular Option:\</b\> The X\-412CW model includes a cellular modem, compatible with our cellular data plans\.\<br /\>\<b\>WiFi is Now Available\.\</b\> The X\-412CW model includes WiFi capability which allows for more flexibility and cost savings for your application\. \<br /\>\<b\>Global Cellular Coverage\.\</b\> Discuss international cellular options with a \<a href="/contact/"\>sales engineer\</a\>\.\</section\>
\<p id="longDescription"\>\[frequentlyBought ids="7624,7916,34491,7781"\]\</p\>
- [X\-410™ \| Edge Programmable Controller](https://controlbyweb.com/x410/): \<section id="longDescription"\>The X\-410™ is a versatile industrial I/O controller with four relays, four digital inputs, and one temperature input, designed for reliable edge control\. Its built\-in web server allows for efficient deployment and its embedded GUI logic builder enable event\-driven or scheduled automation without external software or licensing fees\. \<br /\>Through peer\-to\-peer communication, the X\-410™ can seamlessly expand with other ControlByWeb® devices, making it an efficient choice for system integrators and OEMs who need scalable, protocol\-ready control in demanding environments\.\</section\>
\<ul\>
\<li\>4 Relays \& 4 Digital Inputs\</li\>
\<li\>Up to 16 Temperature Sensors\</li\>
\<li\>Ethernet, Cellular, or WiFi\</li\>
\<li\>9\-28VDC and/or POE\</li\>
\</ul\>
\<section id="longerDescription" style="line\-height: normal; margin: 4% 0 0 0;"\>\<b\>Cellular and WiFi are Now Available\.\</b\> Note that X\-410CW and X\-410W models include cellular and WiFi capability respectively, which allows for more flexibility for your application\. \<br /\>\<b\>Global Cellular Coverage\.\</b\> Discuss international cellular options with a \<a href="/contact/"\>sales engineer\</a\>\.\</section\>
\<p id="longDescription"\>\[frequentlyBought ids="7624,34491,7540,7798"\]\</p\>
\<div id="3d\_model"\> \</div\>
- [X\-401™ \| Dual Relay and Input Module](https://controlbyweb.com/x401/): \<section id="longDescription"\>The X\-401™ combines two SPDT \(Form C\) relays with two optically isolated inputs in a compact, industrial\-grade module\. As part of the 400 Series, it features a browser\-based interface, embedded GUI logic builder, and open protocols \(Modbus, MQTT, SNMP, REST\) for seamless integration with SCADA, PLC, and IIoT systems\. \<br /\>Ideal for applications such as process monitoring, equipment reboot, and alarm control, the X\-401™ provides a reliable edge\-control solution that eliminates licensing fees and reduces integration complexity\.\</section\>
\<ul\>
\<li\>2 Relays \& 2 Digital Inputs\</li\>
\<li\>Ethernet, Cellular, or WiFi\</li\>
\<li\>9\-28VDC and/or POE\</li\>
\</ul\>
\<section id="longerDescription" style="line\-height: normal; margin: 4% 0 0 0;"\>\<b\>Cellular and WiFi are Now Available\.\</b\> Note that X\-401CW and X\-401W models include cellular and WiFi capability respectively, which allows for more flexibility for your application\. \<br /\>\<b\>Global Cellular Coverage\.\</b\> Discuss international cellular options with a \<a href="/contact/"\>sales engineer\</a\>\.\</section\>
\<p id="longDescription"\>\[frequentlyBought ids="7624,7621,7798,34091"\]\</p\>

## Articles
- [Cell Device Setup \| From Purchase to Deployment](https://controlbyweb.com/support/cell-device-setup-from-purchase-to-deployment/)
- [XW\-110™ Installation for Walk\-in Freezers](https://controlbyweb.com/support/wiring-installation/xw110-installation-walk-in-freezer/)
- [400\-Series Data Logging Walkthrough](https://controlbyweb.com/support/data-logging/x400-series-data-logging-walkthrough/)
- [X\-600M Devices Settings Walkthrough](https://controlbyweb.com/support/communication-protocols/x600m-devices-settings-walkthrough/)
- [Overview of ControlByWeb Products](https://controlbyweb.com/support/quick-start/product-overview/)

## Categories
- [Article](https://controlbyweb.com/blog/article/)
- [Application](https://controlbyweb.com/blog/category/application/)
- [Industry](https://controlbyweb.com/blog/category/industry/)
- [Building Automation](https://controlbyweb.com/blog/category/industry/building-automation/)
- [Temperature Monitoring](https://controlbyweb.com/blog/category/application/temperature-monitoring/)

## Tags
- [Case Study](https://controlbyweb.com/blog/case-study-draft/)
- [Temperature Monitoring](https://controlbyweb.com/blog/tag/temperature/)
- [IIoT](https://controlbyweb.com/blog/tag/iiot/)
- [Dry Contact Monitoring](https://controlbyweb.com/blog/tag/dry-contact/)
- [Hardware](https://controlbyweb.com/blog/tag/hardware/)

## Product categories
- [Accessory Products](https://controlbyweb.com/product-category/)
- [Cloud](https://controlbyweb.com/product-category/)
- [Relays](https://controlbyweb.com/product-category/)
- [Digital Inputs](https://controlbyweb.com/product-category/)
- [Liquid Level Sensors](https://controlbyweb.com/product-category/)

## Product tags
- [Modbus TCP/IP](https://controlbyweb.com/product-tag/modbus-tcp-ip/)
- [HTTP\(S\)](https://controlbyweb.com/product-tag/https/)
- [Email Alerts](https://controlbyweb.com/product-tag/email-alerts/)
- [SNMP](https://controlbyweb.com/product-tag/snmp/)
- [ControlByWeb Cloud\-Capable Products](https://controlbyweb.com/product-tag/cloud/)

## Product shipping classes
- [Physical](https://controlbyweb.com/?taxonomy=product_shipping_class&term=physical)
- [Pack Together](https://controlbyweb.com/?taxonomy=product_shipping_class&term=pack-together)
- [Pack Separate](https://controlbyweb.com/?taxonomy=product_shipping_class&term=pack-separate)
- [Digital](https://controlbyweb.com/?taxonomy=product_shipping_class&term=digital)

## Article Categories
- [Quick Start](https://controlbyweb.com/article-categories/quick-start/)
- [Frequently Asked Questions](https://controlbyweb.com/article-categories/frequently-asked-questions/)
- [Networking \& Security](https://controlbyweb.com/article-categories/networking-and-security/)
- [Wiring \& Installation](https://controlbyweb.com/article-categories/wiring-and-installation/)
- [Cloud, Cell, \& App](https://controlbyweb.com/article-categories/cloud-cell-and-app/)

## Media Folders
- [Diagrams](https://controlbyweb.com/?taxonomy=rl_media_folder&term=diagrams)
- [A\+ OLD \- No MQTT](https://controlbyweb.com/?taxonomy=rl_media_folder&term=a-old-no-mqtt)
- [A\+ Banners with MQTT](https://controlbyweb.com/?taxonomy=rl_media_folder&term=a-banners-with-mqtt)
- [Ways to Use CBW](https://controlbyweb.com/?taxonomy=rl_media_folder&term=ways-to-use-cbw)
- [Thumbnails](https://controlbyweb.com/?taxonomy=rl_media_folder&term=thumbnails)

## Optional
- [Sitemap index](https://controlbyweb.com/sitemap_index.xml)