The Volt101A is a compact, low-level DC voltage data logger. Includes standard calibration certificate. Read More >

Key Features:

  • Compact Size
  • 10-Year Battery Life
  • 4 Measurement Ranges



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The Volt101A is a compact, low-level DC voltage data logger. This device is available in four ranges: ±160 mVDC, ±3.2 VDC, -8 VDC to +24 VDC, and -8 VDC to +32 VDC.

With a user-programmable reading rate of up to 4 Hz, 10-year battery life and the ability to store up to 2,095,104 readings, the Volt101A is ideal for long-term studies. Connect negative and positive wire leads directly to the terminal block on the Volt101A to monitor and measure voltage levels. The terminal block easily disconnects to retrieve the logger for data download without disrupting wiring connectivity.

The Volt101A is compatible with the latest MadgeTech 4 Software making starting, stopping, and downloading simple and easy. Graphical, tabular, and summary data is provided for analysis and can be viewed as customizable engineering units.


Memory2,095,104 readings
Reading Rate4 readings every second up to 1 reading every 24 hours
Baud Rate115,200
LED IndicatorsRed & Green
Battery Life10 years typical at a 15 minute reading rate
Dimensions1.4 in x 2.1 in x 0.6 in (35 mm x 54 mm x 15 mm)
Operating Environment-40 °C to +80 °C (-40 °F to +176 °F), 0 %RH to 95 %RH non-condensing
Required Interface PackageIFC200


Voltage Range ±160 mVDC,
±3.2 VDC,
-8 to +24 VDC,
0 to +32 VDC
Voltage Resolution±160 mVDC: 5 μV,
±3.2 VDC: 0.1 mVDC,
-8 to +24 VDC: 0.5 mVDC,
0 to +32 VDC: 1.0 mVDC
Voltage Calibrated Accuracy±160 mVDC: ±0.032 mV @ 25 °C (77 °F),
0 to 2.5 VDC: ±3.2 mVDC @ 25 °C (77 °F),
0 to 15 VDC: ±0.016 V @ 25 °C (77 °F),
0 to 30 VDC: ±0.02 V @ 25 °C (77 °F)


Volt101A Specification Sheet

Volt101A Product User Guide

Support Videos

Volt101A | Changing the Battery

Volt101A | The Difference Between Current & Voltage


Part Numbers

Volt101A (±160 mVDC) — 901846-00
Volt101A (3.2 VDC) — 901850-00
Volt101A (24 VDC) — 901840-00
Volt101A (32 VDC) — 901854-00


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