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X-406 Web-Enabled 1-Wire Multi-Bus Module
5 Year Warranty

X-406 features four, 1-Wire buses for up to 64 sensors, and a built-in web-server.

A Simple Solution for Large-Scale Temperature and Humidity Monitoring

The X-406™ is a fully-featured, web-enabled temperature and humidity module with four, independent 1-Wire Buses.

Each 1-Wire Bus supports up to 16 sensors, for a total of up to 64 sensors.

No software required, no programming necessary, and no subscription to buy.

Important Features

Reliable Wired Solution

Simple. Reliable. Five-Year Warranty.


Custom Email/Text Alerts


Record Temperature/Humidity History


Monitor Temperature and Humidity from the Web

Applications - Industrial Internet of Things (IIoT)

The X-406 is ideal for applications which require many 1-Wire sensors or isolation between sensors. For example:

Server Room Monitoring

The X-406 is a very useful tool for monitoring server temperatures.

Connect up to 64 Sensors

The X-406 features four 1-Wire Buses, making it optimal for monitoring the temperature of multiple servers. Each 1-Wire Bus can support up to 16 sensors for monitoring a total of up to 64 different server temperatures.

Peer to Peer Communication

Link the X-406 to other ControlByWeb products for additional monitoring and control.

Logging/Email Alerts

Enable logging to keep a real-time record of server temperatures over time. The X-406 can be configured to send custom email/text alerts if the sensor goes out of range.

X-406 monitoring temperatures for multiple servers View Featured Products


  • Four independent 1-Wire Buses
  • Connect up to 16 sensors per 1-Wire bus for monitoring up to 64 sensors (temperature, humidity, etc.)
  • Monitor, log, and control 32 remote modules, or up to 100 I/O
  • User Permissions: Admin, Manager, User
  • Tasks
    • 50 Scheduled
    • 50 Conditional
    • 20 Override Schedules
  • Send email alerts based on user-defined conditions (supports encrypted email servers, such as Gmail)
  • Real-Time Clock with NTP server synchronization
  • Automatic daylight savings and leap year adjustment
  • No software required
  • Customizable web-based Control Page
  • BASIC script support for advanced flexibility
  • Configurable logging
  • Graphing (logged data)
  • HTTPS/TLS encrypted
  • Static or DHCP IP address configuration
  • Modbus, SNMP, Remote Service, IP Filtering
  • Field updatable
  • Removable 14-Terminal connector for easy installation
  • Rugged DIN-Rail/wall-mountable enclosure
CE listed RoHS compliant Made in the USA

X-406 Part Numbers (Differences highlighted in green)

X-406-I Temp: Up to 64 sensors. Task builder, email daily log file, add 100 I/O on up to 32 Remote I/O Modules 9-28 VDC
X-406-E Temp: Up to 64 sensors Task builder, email daily log file, add 100 I/O on up to 32 Remote I/O Modules POE and/or 9-28 VDC

More Information:


Where to Buy

Click "Buy Online" to view part numbers and pricing. X-406 is available in the USA and internationally, and can be purchased either from us or an Authorized Distributor.

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Warning: May contain chemicals, including Nickel (metallic), known to the State of California to cause cancer and reproductive harm. -