The Yocto-milliVolt-Rx device is a high accuracy USB voltmeter. It lets you measure by USB very small voltages (down to a few dozen of microVolts, and up to 2V max), even when they are generated by extremely weak sources (very high impedance).

Typical applications include measurement of electro-chemical reactions (e.g. pH and redox probes), low-voltage sensors (e.g. gaz sensors, etc), or Wheatstone bridges (e.g. load cells, etc). It is also possible to use this device to accurately measure the voltage drop across a shunt to measure high currents.

The input circuit of this device uses a very low bias current amplifier (typ. 0.2 pA). The measure circuit is electrically insulated from the USB bus, which makes it possible to measure grounded voltages without risk of creating a ground loop.

For measuring the weakest signals (e.g. pH measurements), we recommend to use the BNC variant of this product, which features a BNC connector to use with coaxial cable, to avoid electromagnetic interference.

This device can be connected directly to an Ethernet network using a YoctoHub-Ethernet, to a WiFi network using a YoctoHub-Wireless-n and to a GSM network using a YoctoHub-GSM.

Yocto-milliVolt-Rx Yocto-milliVolt-Rx Yocto-milliVolt-Rx

USB cables and enclosures to be ordered separately.

CHF 55.90

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Hardware release:Rev. B
Product name:Yocto-milliVolt-Rx
USB connector:micro-B
Input bias current (typ.):< 1pA
Refresh rate:100Hz
Input impedance:> 1000GΩ
Measuring range:-1000 ... +2000mV
Protection class, according to IEC 61140:class III
USB insulation, dielectric strength (1 min.):1kV
Normal operating temperature:5...40░C
Extended operating temperature2:-30...85░C
Supported Operating Systems:Windows (PC + IoT), Linux (Intel + ARM), macOS, Android
Drivers:no driver needed
API / SDK / Libraries:C++ Obj-C C# VB.NET UWP Delphi Python Java Android LabVIEW
API / SDK / Libraries (TCP only):Javascript Node.js PHP
RoHS compliance:RoHS III (2011/65/UE+2015/863)
Suggested enclosure:YoctoBox-Short-Thick-Black
Harmonized tariff code:8542.3190
Made in:Switzerland

1 These specifications are for the current hardware revision. Specifications for earlier revisions may differ.
2 The extended temperature range is defined based on components specifications and has been tested during a limited duration (1h). When using the device in harsh environments for a long period of time, we strongly advise to run extensive tests before going to production.

Accessories and related products

YoctoBox-Short-Thick-Black, Enclosure for Yoctopuce device (short, thick, black)USB-A-MicroB-50, USB 2.0 type A to Micro-B data cable, 50 cmYoctoHub-Ethernet, Ethernet-enabled hub for Yoctopuce modules

Related articles and application examples


User manual (HTML)
User manual (PDF)
Product brief
3D file (STEP)
RoHS certificate
Most recent firmware39893 (04/06/2020)
Library for Javascript40411 (05/07/2020)
Library for PHP40411 (05/07/2020)
Library for Objective C40411 (05/07/2020)
Library for C++40411 (05/07/2020)
Library for C#40411 (05/07/2020)
Library for VisualBasic .NET40411 (05/07/2020)
Library for Delphi40411 (05/07/2020)
Library for Python40411 (05/07/2020)
Library for Java40411 (05/07/2020)
Library for Android40411 (05/07/2020)
Library for LabVIEW40785 (05/29/2020)
Library for Command line35652 (06/05/2019)
Virtual Hub for Windows39661 (03/13/2020)
Virtual Hub for Linux, Intel + ARM39661 (03/13/2020)
Virtual Hub for Mac-OS-X39661 (03/13/2020)

Add a comment 2 comments

1 - volt-win10 Saturday,july 28,2018 15H29

My Windows 10 computer does not recognize Yocto-milliVolt-Rx-USB.
I installed VirtualHub.windows.31315 (64bit).
Can you create a driver for Windows 10 and make the istallation instruction?

2 - martinm (Yocto-Team)Saturday,july 28,2018 17H18

@volt-win10: Our products don't need any drivers. Your Yocto-milliVolt-rx is supposed to work on any version >=Windows XP, including Windows 10 64bits, as soon as it it plugged. Make sure that you are using a proper USB cable, not a phone USB charging cable, then contact Yoctopuce support.

Yoctopuce, get your stuff connected.