Starting at $219.00

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Requires IFC200 USB Cable & Software Package (Purchased separately)


  • 10 Year Battery Life
  • 4Hz Reading Rate
  • Pushbutton start/stop function
  • Ultra High Speed Download
  • 1 Million Reading Storage Capacity
  • Memory Wrap
  • Battery Life Indicator
  • Optional Password Protection
  • Programmable High and Low Alarms
  • Field Upgradeable

What's in the Box

  • NIST traceable calibration certificate

The MadgeTech Volt101A is a low cost, state-of-the-art temperature data logger. Its high accuracy and 16 bit resolution place this product at the forefront for low level dc voltage recording devices. Designed with the user in mind, the Volt101A is loaded with features making it second to none when it comes to price and performance. The Volt101A is ideal for accurately measuring and recording battery voltages, sensor output signals, photovoltaic studies, as well as many other low level dc voltage sources.

The MadgeTech Volt101A is available in three different input ranges: 2.5V, 15V and 30V versions. Standard features of the Volt101A include: a 10 year battery life, 4Hz reading rate, a multiple start/stop function, ultra-high speed download capability, 1 million reading storage capacity, optional memory wrap, precision RTD sensing element, battery life indicator, optional password protection, programmable high-low alarms and more.

Using the free MadgeTech software, starting, stopping and downloading from the Volt101A is simple and easy. Graphical, tabular and summary data is provided for analysis and data can be viewed in multiple units using the Engineering Units function. The data can also be automatically exported to Excel for further calculations.

MadgeTech offers free firmware upgrades for the life of the product so that data loggers already deployed in the field can grow with new technological developments. Units can be upgraded from any PC.

Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.

MadgeTech IFC200 USB Cable & Software
USB interface cable and software package for MadgeTech data loggers
In Stock


MadgeTech Replacement Battery
Replacement batteries for MadgeTech 101A series data loggers
In Stock


MadgeTech MT-AluCase Briefcase
Aluminum data logger briefcase, lightweight, durable, 14 or 18 inch wide

Application Notes

Here's how some of our customers used this product.

Datalogging in Small Spaces

The Background: Our customer is a facility that needs to data log a low voltage process signal inside a small enclosure.

The Problem:* The enclosure has a NEMA 4X rating which must be maintained so the data logger needs to be able to fit inside the small enclosure.

The Solution: We recommended the MadgeTech Volt101A which is battery powered and, at just 1.4 inches x 2.1 inches x 0.6 inches, is small enough to fit inside cramped spaces.

Part Number Price Available
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Base Price
15 VDC
$219.00 1

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