The Yocto-milliVolt-Rx-BNC device is a high precision USB voltmeter. It will let you measure by USB very small voltages (down to a few dozens of microVolts, and up to 2V max), even when they are generated by extremely weak sources (very high impedance). The BNC connector makes it possible to bring the signal using a shielded coaxial cable.

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 less sensitive signals, you can use the variant of this product that has a rising cage connector, and which is significantly shorter.

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.

Enclosure available separately Yocto-milliVolt-Rx-BNC Yocto-milliVolt-Rx-BNC

USB cables and enclosure to be ordered separately.

CHF 62.57

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Manufacturer Product NumberRXMVOLT2
Product name:Yocto-milliVolt-Rx-BNC
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-Long-Thick-Black-BNC
Made inSwitzerland

Related articles and application examples

 Using the new Yocto-milliVolt-Rx for pH measures  Yocto-Visualization,  a free visualization app  Everything you wanted to know on Yoctopuce sensors 

Accessories and related products

YoctoBox-Long-Thick-Black-BNC, Enclosure for Yocto-milliVolt-Rx-BNC (black base)YoctoBox-Long-Thick-Transp-BNC, Enclosure for Yocto-milliVolt-Rx-BNC (long thin transplucent)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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