RXMVOLT1 Yocto MilliVolt Rx Voltmeter


Small USB module to measure small and very weak electric signals. The device can convert the voltage measure to an equivalent physical measure on the fly, and includes a built-in datalogger.

SKU: RXMVOLT1 Categories: ,


The Swiss-made high-precision RXMVOLT1 Yocto MilliVolt Rx Voltmeter will let you measure very small voltages (down to a few dozen of microVolts, and up to 2V max) via a USB, 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.

USB cables and enclosure to be ordered separately.

Specifications for RXMVOLT1 Yocto MilliVolt Rx Voltmeter

Manufacturer Product Number – RXMVOLT1
Product name – Yocto-milliVolt-Rx
Width – 20mm
Length – 45mm
Weight – 6g
USB connector – micro-B
Channels – 1
Input bias current (typ.) – < 1pA
Refresh rate – 100Hz
Input impedance – > 1000GΩ
Measuring range – -1000 … +2000mV
Accuracy – 0.1%
Resolution – 0.02mV
USB bus insulation – 1kV
Sensitivity – 0.01mV
Supported Operating Systems – Windows, Linux (Intel + ARM), Mac OS X, Android
Drivers – no driver needed
API / SDK / Libraries – (USB+TCP)C++, Objective-C, C#, VB .NET, Delphi, Python, Java/Android
API / SDK / Libraries – (TCP only)Javascript, Node.js, PHP, Java
RoHS – yes
Suggested enclosure – YoctoBox-Short-Thick-Black
Made in – Switzerland


Additional information

Weight 0.1 lbs
Dimensions 2.5 × 1 × 1 in


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