LabJack T4 - Ethernet and USB Multifunction DAQ Unit

LabJack T4 - Ethernet and USB Multifunction DAQ Unit

SKU: LAJ-027

The T4 is a USB or Ethernet multi function DAQ device with up to 12 analogue inputs or 16 digital I/O, 2 analog outputs (10-bit), and multiple digital counters/timers

  • Manufacturer: LabJack
Buy more for less:
1-4items$297.17/ each 
5or more items$282.31/ eachsave5%
  • $297.17
In stock(2 items available)

Labjack has just released their new T4 DAQ device. The T4 is a USB or Ethernet multifunction DAQ device with up to 12 analogue inputs or 16 digital I/O, 2 analog outputs (10-bit), and multiple digital counters/timers for data logging, data acquisition, measurement and control applications. Kipling is available for basic configuration and testing, and a selection of charting and logging software is also available. Also supports the Modbus TCP protocol for industrial applications.

The LabJack modules come with Windows software that allows you to be quickly up and logging and graphing data. 

The T4 is much like its bigger brother, the T7, in that it supports the LJM driver (and many other software options) for easy cross-platform programming (Windows, Mac OS X / macOS, Linux and various ARM-based Linux distributions), Modbus register access to every device attribute and the ability to run on-board Lua scripts using Kipling. The T4 also includes the same Ethernet communication interface that the T7 supports (allowing for two clients to be simultaneously connected) and is a Modbus TCP/UDP server. The T4 differentiates itself from the T7 by incorporating many popular features from the U3-HV such as high and low voltage analogue inputs and flexible I/O lines. The T4 series devices are our lowest cost devices with Ethernet connectivity. They are also capable of stand-alone operation by running Lua scripts.

Flexible I/O:

The 8 I/O lines marked as FIO4-FIO7 and EIO0-EIO3 are flexible I/O lines. This means they can be individually configured as digital input, digital output, or analog input lines. When configured as digital I/O, they can be used as general purpose 3.3V logic lines, can be configured for the timers/counters sub-system, or can be used as SPI, I2C, or other digital communication protocol lines. When configured as analog inputs, they are 0-2.5V analog inputs with up to 12 bits of resolution.

High Voltage Analog Inputs:

The first 4 I/O lines on the LabJack T4 are dedicated high voltage analog inputs. Their voltage range is ±10V with 12 bits of resolution. For more details, look in the T4 datasheet.

Analog Outputs:

The LabJack T4 has 2 analog outputs (DAC0 and DAC1). Each analog output can be set between 0 and 5V with 10 bits of resolution.


The T4 has multiple hardware timers that provide options such as PWM output, pulse/period timing, pulse counting, and quadrature input.


The T4 has multiple hardware counters that can be used for detecting pin toggles.

Analogue output: 2 (10-bit, 0-5 volts)

Flexible I/O with range 0-2.5V, 12-bits accuracy

4 x dedicated high voltage (±10V) analogue inputs, 12-bits of accuracy

8 x Flexible I/O lines (digital input, digital output, analogue input)

8 x Dedicated 3.3V digital I/O great for UART, SPI, I2C, 1-wire

Timers provide PWM output, quadrature input pulse/period timing, and pulse counting.

Watchdog system

Supports LJTick accessories for additional analogue outputs, analog buffers, and more.

Serial protocols: SPI, I2C, and more

Up to 8 PWM, Quadrature, Pulse Width, and more

Same software API as the T7/T7-Pro

Built-In Screw Terminals for Some Signals

USB 2.0/1.1 Full Speed Interface

Ethernet RJ45 Interface

Powered by USB Cable

LUA Scripting for Stand-Alone Use

Examples Available for C/C++, VB, LabVIEW, Python in due course

DAQFactory Express Software driver in due course

Rated for Industrial Temp Range: -40 to +85 °C

    • SKU
    • Weight
      0.3 kg
    • Dimensions (L x W x H)
      21 x 12 x 7 cm

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

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