• Yocto-Volt - VOLTAGE1

This device is a digital USB voltmeter that allows you to measure voltage automatically. It can provide quite accurate digital measures for low DC voltage (0.01 Volt accuracy), but works as well for higher voltage, including AC, up to 250V (RMS), with an accuracy of 3%.

This device is isolated, which means that the sensor part is electrically disconnected from the USB part: you can measure any voltage difference between -250V and 250V, without risk of frying your computer.
The modules provides immediate reading on USB, and can also store measures on the device internal flash for later retrieval when connected again by USB.

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-Volt Yocto-Volt Yocto-Volt

USB cables and enclosures to be ordered separately.


Hardware release:Rev. C
Product name:Yocto-Volt
USB connector:micro-B
Refresh rate:10Hz
Input impedance:>660KΩ
Measuring range:-250...250V DC/rms
Accuracy:0.01V / 0.5%
Max working voltage:250V r.m.s.
Accuracy (AC, 50Hz/60Hz):0.1V / 1%
Accuracy (DC):0.01V / 0.5%
Sensitivity:0.01V 0.2%
Measurement category:Cat II
Protection class, according to IEC 61140:class II
USB isolation, clearance dist.:4.5mm
USB isolation, creepage dist.:3 + 2.6mm
USB isolation, dielectric strength (1 min.):1.5kV r.m.s.
Normal operating temperature:5...40Ѓ
Extended operating temperature2:-30...85Ѓ
Supported Operating Systems:Windows (PC + IoT), Linux (Intel + ARM), macOS, Android
Drivers:Driverless, 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-Long-Thick-Black
Harmonized tariff code:9032.9000
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-Long-Thick-Black, Enclosure for Yoctopuce device (long, thick, black)Micro-USB-Hub-V2, Micro USB hub (multi-TT) with solder pads, for DIY useFix-2.5mm, screws and spacersUSB-A-MicroB-50, USB 2.0 type A to Micro-B data cable, 50 cmYoctoHub-Ethernet, Ethernet-enabled hub for Yoctopuce modules


User manual (HTML)
User manual (PDF)
Product brief
3D file (STEP)
RoHS certificate
REACH certificate
Most recent firmware44118 (03/10/2021)
Programming libraries44175 (03/12/2021)
Command line API44175 (03/12/2021)
VirtualHub application44029 (02/26/2021)


Yocto-Volt - VOLTAGE1

  • Brand: Yoctopuce
  • Product Code: VOLTAGE1
  • Availability:
  • $89.00