AO4-420MA USB 4-20mA Analogue Output Unit - 4 Channel

AO4-420MA USB 4-20mA Analogue Output Unit - 4 Channel
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Our Price:  £99.00(£118.80 Inc. VAT)

Analogue Outputs:  4


3 in stock, immediate despatch  

3 in stock, immediate despatch

The AO4 is a 4-channel USB Data acquisition unit that can generate 4-20mA process control signals. The USB driver for both Windows and Linux systems installs a virtual serial port and the AO4 output is easy to set by using simple data commands.

Special Offer:  Discounts of 7%, 10%, 12.5% and 15% are available when you order 10, 25, 50 and 100 items or more of this product.

  • 4 x 4-20mA current loop source outputs
  • Maximum loop resistance 250ohm
  • 12-bit resolution
  • Accuracy: ±0.25% full scale
  • USB 2.0
  • Drivers for Windows and Linux
  • Installs as a Virtual Serial Port
  • Controlled via simple Hex commands
  • Command line tools and APIs for Windows and Linux are available.
  • USB Powered - no external PSU required
  • Supplied with USB lead
  • DIN rail Mount
  • Operating Temperature Range: 0 to 55°C
  • Dimensions L x W x H  90 x 54 x 62 mm

The USB Analog Output Module generates 4 programmable 4-20mA analogue current outputs. 4-20mA interfaces are the industry standard for reliable long distance transmissions of measurement signals. The big advantage of 4-20mA interfaces is the elimination of the transmission line itself.

Current sources drive a specified current through a load. Because of the limited current provided by USB, the maximum ratings must be considered. In order to fit the application best and in order to reduce the consumed power the a minimum, current outputs are carried out in two different ways fitting two different burden resistors of 250 and 500 Ohms.

All analog output channels are independent and have a accuracy of 0.25% and a resolution of 12 bit

All LucidControl are most cost-effective because the required power is supplied by USB and they do not need additional power supplies. Since the Analog Output Modules are able to drive high voltages and high currents the USB current limits must be taken into account and an additional USB hub with external power supply is recommended.

Drivers and Software

LucidControl provides drivers for all major operating systems. Command line tools and APIs for Windows and Linux are available.


ProfiLab-Expert is a low cost graphical programming software package for data acquisition and control applications. No programming experience is needed, programs are written by connecting function blocks together with wires. Professional user panels can be designed with custom controls, and the whole program can be compiled into a stand-alone executable file, with no run-time penalties.

More Information >>



General User Manual >>

AO4 User Manual >>

Software Downloads >>


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