The Yocto-milliVolt-Rx device is a high precision USB voltmeter. It will let 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 precisely measure the voltage drop accross 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 isolated 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), it is recommanded to use the BNC variant of this product, which features a BNC connector to use with coaxial cable, and avoid electromagnetic interferences.

This device can be connected directly to an Ethernet network using a YoctoHub-Ethernet, to a WiFi network using a YoctoHub-Wireless-g, it can even be connected to a GSM network thanks to the YoctoHub-GSM.

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

USB cables and enclosure to be ordered separately.

CHF 55.90

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Manufacturer Product NumberRXMVOLT1
Product name:Yocto-milliVolt-Rx
USB connectormicro-B
Input bias current (typ.)< 1pA
Refresh rate100Hz
Input impedance> 1000GΩ
Measuring range-1000 ... +2000mV
USB bus insulation1kV
Normal operating temperature5...40░C
Extended operating temperature-30...85░C
Supported Operating SystemsWindows (PC + IoT), Linux (Intel + ARM), macOS, Android
Driversno driver needed
API / SDK / Libraries (USB+TCP)C++, Objective-C, C#, VB.NET, UWP, Delphi, Python, Java, Android
API / SDK / Libraries (TCP only)Javascript, Node.js, PHP
Suggested enclosureYoctoBox-Short-Thick-Black
Made inSwitzerland

Related articles and application examples

 Using the new Yocto-milliVolt-Rx for pH measures  Transforming the Yocto-milliVolt-Rx into a USB ammeter  An Ethernet-enabled scale  Yocto-Visualization,  a free visualization app  Everything you wanted to know on Yoctopuce sensors 

Accessories and related products

YoctoBox-Short-Thick-Black, Enclosure for Yoctopuce device (short, thick, black)YoctoBox-Short-Thick-Transp, Enclosure for Yoctopuce device (short, thick, transp)USB-A-MicroB-30, A to micro-B USB data cable, 30cmYoctoHub-Ethernet, Ethernet-enabled hub for Yoctopuce modules


User manual (HTML)
User manual (PDF)
3D file (STEP)
RoHS Certificate (PDF)
Last Firmware28721 (09/29/2017)
Library for Javascript29837 (02/02/2018)
Library for PHP30378 (03/15/2018)
Library for Objective C29837 (02/02/2018)
Library for C++29837 (02/02/2018)
Library for C#29837 (02/02/2018)
Library for VisualBasic .NET29837 (02/02/2018)
Library for Delphi29837 (02/02/2018)
Library for Python30378 (03/15/2018)
Library for Java30378 (03/15/2018)
Library for Android30378 (03/15/2018)
Library for Command line29837 (02/02/2018)
Virtual Hub for Windows30378 (03/15/2018)
Virtual Hub for Linux, Intel + ARM30378 (03/15/2018)
Virtual Hub for Mac-OS-X30378 (03/15/2018)

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