X-16S™ | 8 Analog Input Expansion Module

$359.99

The X-16S™ adds eight analog inputs to an X-400™ or X-600M™ controller, delivering high-resolution measurement with a 24-bit A/D converter. Inputs can be configured for single-ended or differential readings, providing flexibility for a wide range of sensor types. A built-in 5.0V reference output allows direct connection of potentiometers and other resistance-based sensors.

Connected via ribbon cable for both power and communication, one or more X-16S™ modules can be added to scale analog input capacity. Common applications include process monitoring, flow and pressure sensing, tank or bin level measurement, and precision instrumentation.

8 Analog Inputs

Expansion Module for the X-400 or X-600M

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X-22s 8 Analog Input Expansion Module

Recommended: Updated X-22s Model

Configurable Analog Inputs: ±1.28V, ±2.56V, ±5.12V, ±10.24V, 4-20mA

Learn More
X-22s 8 Analog Input Expansion Module

Recommended: Updated X-22s Model

Configurable Analog Inputs: ±1.28V, ±2.56V, ±5.12V, ±10.24V, 4-20mA

Learn More

Level, Pressure, Voltage, & More

An X-400 or X-600M connected with an expansion module like the X-16S provides an easy, flexible, and reliable way to monitor and control systems and devices over a network. The X-16S works on 0-5V* ranges, making it ideal for measuring precision analog voltages. This includes level monitoring, tanks, and analog transducers ranging from pressure, soil moisture, voltage, or current.

See All Expansion I/O

*External resistors can be used to scale inputs with a voltage range outside of 0-5V to a value compatible with the X-16S. See the users manual for details.

X-16S Features

  • 8, 0-5V precision analog inputs
  • Removable terminal connector
  • Powered through expansion bus – no separate power supply connections are required

X-16S Master Devices

  • X-400™ | Modular I/O Controller

    X-400™ | Modular I/O Controller

     Price range: $299.99 through $399.99
    TThe X-400™ is a scalable Ethernet-based controller that supports up to 32 local expansion modules or remote ControlByWeb® devices through peer-to-peer communication, enabling systems with up to 64 I/O points. Its browser-based interface and embedded GUI logic builder provide event-driven automation for powerful turn-key solutions and seamless integration with SCADA and PLC platforms—without licensing fees.

    X-400C™ – Cellular-Enabled Model
    The X-400C™ adds a built-in cellular modem, extending the same modular control and integration capabilities to remote or distributed applications.
    • Expandable, Up to 64 I/O
    • Relays, Analog & Digital Inputs
    • Up to 16 temp sensors
    • Cellular version available
    Global Cellular Coverage. Discuss international cellular options with a sales engineer.

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  • X-600M expandable I/O controller

    X-600M™ | Web-Enabled I/O Controller

     $549.99
    The X-600M™ is ControlByWeb’s most advanced controller, built for large-scale industrial and OEM applications. Supporting up to 64 expansion modules and 1,024 I/O points, it’s engineered for high-density, complex systems.

    With an embedded logic builder, LUA scripting for advanced control, and support for multiple customizable dashboards, the X-600M™ gives engineers powerful tools for automation and visualization. Open protocol support (Modbus, SNMP, peer-to-peer) ensures seamless integration with SCADA and PLC systems, delivered without licensing fees or proprietary lock-in.
    • Expandable, Up to 1,024 I/O
    • Relays, Analog/Digital/Thermocouple Inputs
    • Up to 32 Temperature Sensors
    • GUI Dashboard

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Need Help Choosing the Right Product?

Let our Sales Engineers identify the right solution for your application.

   

(Example images are shown. Label and terminal connector may differ)

Specifications

Power Requirements
  • Voltage: 9-28 VDC (supplied via the X-400 or X-600M controller, 24V recommended)
  • Max Current: See table below for typical values at 25°C.
Power Supply Current
9 VDC 40 mA
12 VDC 30 mA
24 VDC 18 mA

Analog Inputs
  • Number of Inputs: 8
  • Type: 8 single-ended, 4-differential, or a combination
  • Input Range: -0.1V (min), 5.1V (max), all channels **Note that inputs have high impedance so input range can easily be adjusted using external resistors. Example: 0 to 10 Volt or 4-20mA
  • Resolution: 10μV (24 bit ΣΔ ADC)
  • Reference: 5.00V, 0.04%, 3ppm/C, 25mA Max

Connectors
  • Inputs: 14-Position, 3.81mm terminal spacing, Removable. For 16-28 AWG wire.
  • Expansion Connector: Ribbon cable, 10-conductor, polarized, 2×5-position, 0.100″ pitch Provides power and communications for expansion modules (Communications: RS-485)
LED Indicators
  • Number of LEDs: 1
    • Power on
Physical
  • Size:
    • 1.41in (35.7mm) wide
    • 3.88in (98.5mm) tall
    • 3.1in (78mm) deep (not including connector)
  • Weight: 4.8 oz (136 g)
  • Enclosure Material: Lexan 940 Polycarbonate Plastic
  • Enclosure Flame Rating: UL94 V0
Environmental
  • Operating Temperature: -40°F to 150°F (-40°C to 65.5°C)
  • Storage Temperature: -40°F to 185°F (-40°C to 85°C)
  • Humidity: 5-95%, non-condensing
  • Altitude: Up to 2,000m
  • Indoor use or NEMA-4 protected location

Electromagnetic Compliance
  • IEC CISPR 22, CISPR 24
  • FCC 47CFR15 (Class B)
  • EN55024 ITE Immunity (2010)
  • EN55022 Emissions (2010)
Product Safety Compliance
  • UL 61010-1
  • E468316-A1
  • CSA-C22.2
  • CCN: QUYX, QUYX7

Manuals & Downloads

Users Manuals

X-16S Users Manual (PDF)

Catalog

X-16S Data Sheet (PDF)

ControlByWeb Product Catalog

Other Downloads

X-16S 3D Model (.stp)

Accessories

 

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ControlByWeb Cloud Device Seat

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For your convenience we have set up a live X-600M 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-600M through its control page. The control page allows you to change the state of the relay and view the current state of the input.

X-332™

Digital Input Control Page

X-600M™

Control Page Setup Pages*

*Setup page login information:

Username: admin

Password: webrelay

X-600M live demonstration setup

Live Demo With One of Our Sales Engineers

Let’s make it easy with a live demo and screen sharing.

Set up a one-on-one Q & A with one of our experts. We’ll help you find the best solutions for your next project and walk you through a demonstration.

Schedule Free Consultation

 

Low on time? Watch a pre-recorded demo instead:

X-600M Setup and Programming Demo

X-600M Setup

The diagrams illustrate how this demonstration is wired. The relays on all expansion modules are not connected to a load; however, you can still access and control the relays by turning them on or off through the X-600M dashboard. The X-600M is also wired to a temperature sensor, and the X-13s is connected to a thermocouple. Both sensors can be monitored on the X-600M’s dashboard. The digital input states on the X-15s only changes when a voltage is applied to the inputs. For this demonstration, we have connected one of our X-332 controllers to Input 1 on the X-15s. You can apply a voltage to this input by accessing the control page for the X-332 (Digital Input Control Page).

Important Information

  • Multiple users may be accessing this device simultaneously so the device can change while you are using it.
  • This unit will be reset to factory defaults daily at 2:30AM MST.
  • Please DO NOT change network or password settings.

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  • X-418 8-Channel Analog Input Module with configurable inputs for voltage and current monitoring

    X-418™ | 8-Channel Analog Input Module

     Price range: $369.99 through $399.99
    The X-418™ is an industrial-grade analog input controller with eight configurable analog-to-digital channels, designed for reliable monitoring of process variables such as tank or bin level, pressure, flow, current, and more.

    It can function as a stand-alone device with its embedded GUI logic builder and browser-based dashboards, or integrate seamlessly into SCADA, PLC, and IIoT platforms using open protocols. The X-418™ delivers accurate, scalable sensor monitoring without licensing fees or vendor lock-in—ideal for OEM equipment, utilities, and process automation environments.

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  • X-412 with Cell, WiFi, and POE icons

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     Price range: $369.99 through $469.99
    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.

    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.
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  • X-22S 8 Analog Input Expansion Module

    X-22S™ | 8 Analog Input Expansion Module

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    The 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.

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400 Series Guided Demo

Self-Guided, Live Demo of our Products

SETUP PAGES

Use the Setup Page to set up I/O, change settings, and create logic with intuitive dropdown menus.

CONTROL PAGE

Use the Control Page to see I/O status and manually control relays.

*Setup page login information: Username: admin Password: webrelay

Schedule A Guided Walkthrough

Want a little extra guidance? Schedule a 15-minute guided demo with our sales engineers. They’ll show you how it works for your application.

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