X-400™ | Modular I/O Controller

Engineering & Marketing International

Flexible. Modular. Web-Enabled.

  • X-400-I,X-400C-I-CA

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.

The X-400™ is a web-enabled controller that allows for up to 32 added expansion modules and/or remote I/O devices. Expansion modules are connected directly to the X-400 via ribbon cable, or remotely with other CBW devices via P2P—allowing for monitoring and control of up to 64 I/O.The X-400C offers wireless capability with a built-in, low-power LTE-M cellular radio. Cellular models with an annual data plan include a dual SIM that provides combined coverage through AT&T and T-Mobile, automatically switching between the two for the best coverage.

  • Expandable, Up to 64 I/O
  • Relays, Analog & Digital Inputs
  • Up to 16 temp sensors
  • Cellular version available

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


Power Requirements

  • X-400-IVoltage: 9-28 VDC
  • Max Current: (See Table)
Power Supply Input Current (no expansion modules) Input Current (X-400 + 1.7A for expansion modules)
9 VDC 134 mA 1.834 A
12 VDC 101 mA 1.801 A
24 VDC 55 mA 1.755 A
  • X-400C-I-CAVoltage: 9-28 VDC
  • Max Current: (See Table)
Power Supply Input Current (no expansion modules) Input Current (X-400C + 1.7A for expansion modules)
9 VDC 240 mA 1.94 A
12 VDC 185 mA 1.85 A
24 VDC 95 mA 1.80 A

Voltage Outputs

  • Expansion Bus: 1.7A max

Temperature Sensors

  • Maximum Number of Sensors: 16
  • Type: Dallas Semiconductor DS18B20
  • Temperature Range: -67°F to 257°F (-55°C to +125°C)
  • Accuracy: ±0.5°C (from -10°C to +85°C)
  • Sensor Functions: Monitor Temperature, Log Temperature, Email Alerts, SNMP Traps
  • Humidity Type: ControlByWeb Model X-DTHS-P sensor
  • Humidity Range: 0-100% RH
  • Accuracy: ±2%
  • Max Cable Length: 600 feet (180m) maximum combined cable length


  • Type: 10/100 Base-T Ethernet Port
  • Setup: Static or DHCP IP address configuration
  • Wireless: Cellular Modem (X-400C model only)


  • Power and 1-Wire Bus: 5-Position, 3.81mm terminal spacing, Removable. For 16-28 AWG wire.
  • Expansion Bus: Ribbon cable, 10-conductor, polarized, 2×5-position, 0.100″ pitch Provides power and communications for expansion modules (Communications: RS-485)
  • Network: 8-pin RJ-45
  • Cell Antenna: Male SMA Connector (X-400C model only)

Real-Time Clock

  • Manual or NTP(Network Time Protocol) setup
  • NTP Sync Period: Once, Daily, Weekly, On Powerup
  • Auto Daylight Savings Adjustment
  • Battery (capacitor) Power Backup

Capacitor Power Backup

  • Backup Functions: Retain Real-Time Clock, 1 Register, 2 Counters, 64 Relay States (local and expansion relays only)
  • Backup Duration: 2 week minimum

LED Indicators

  • Number of LEDs: 3
    • Power on
    • Network linked
    • Network activity


  • Operating Temperature: -40°F to 150°F (-40°C to 65.5°C)
  • Size:
    • 1.41in (35.7mm) wide
    • 3.88in (98.5mm) tall
    • 3.1in (78mm) deep (not including connector)
  • Weight: 5 oz (142 grams)
  • Enclosure Material: Lexan 940 Polycarbonate Plastic
  • Enclosure Flame Rating: UL94 V0

Email Notifications

  • Email Addresses: 8
  • Encrypted Email Alerts: STARTTLS and TLS/SSL
  • Alert Functions: I/O states – Fully customizable


  • HTTP, HTTPS, SSL, XML, Modbus TCP/IP, SNMP, SMTP, Remote Services


  • Log File Size: 3,072-Kbyte (up to 50,688 logs)
  • Storage: Nonvolatile Flash
  • Buffer Architecture: Circular Buffer

Advanced Features

  • Task Builder
  • BASIC interpreter (up to 4-Kbytes script file size)
  • Remote services
  • ControlByWeb Cloud Compatible

Password Settings

  • Password Length: 6-18 Characters

Electromagnetic Compliance

  • IEC CISPR 22, CISPR 24, EU EN55024, EN55022
  • FCC 47CFR15 (Class B)

Product Safety Compliance

  • IEC 61010-1