SparkFun
Artech Digital Multimeter - A5020
The Artech A5020 is a 4000-count True RMS digital multimeter with Smart Measurement — it automatically identifies whether you're measuring AC voltage, DC vol...
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The Artech A5020 is a 4000-count True RMS digital multimeter with Smart Measurement — it automatically identifies whether you're measuring AC voltage, DC voltage, resistance, or continuity, and auto-ranges to the optimal setting for accuracy.
Beyond standard voltage and current readings, the A5020 measures capacitance, frequency, duty cycle, and temperature (via the included Type K thermocouple). A continuity buzzer sounds below approximately 40 Ω, and the meter auto-powers off after 15 minutes to conserve battery life.
Key Features
- Smart Measurement – Auto-identifies ACV, DCV, resistance, and continuity
- True RMS – Accurate AC readings for non-sinusoidal waveforms
- Auto-Ranging – Automatically selects the best range for resolution and accuracy
- Temperature Measurement – Type K thermocouple included
- Continuity Buzzer – Audible alert below ~40 Ω
- Auto Power Off – Shuts off after approximately 15 minutes
Specifications
- DC Voltage – 400 mV / 4 V / 40 V / 400 V / 1000 V
- AC Voltage – 4 V / 40 V / 400 V / 750 V
- DC Current – 400 µA / 4000 µA / 40 mA / 400 mA / 4 A / 20 A
- AC Current – 400 µA / 4000 µA / 40 mA / 400 mA / 4 A / 20 A
- Resistance – 400 Ω / 4 kΩ / 40 kΩ / 400 kΩ / 4 MΩ / 40 MΩ
- Capacitance – 9.999 nF / 99.99 nF / 999.9 nF / 9.999 µF / 99.99 µF / 999.9 µF
- Frequency – 9.999 Hz / 99.99 Hz / 9.999 kHz / 999.9 kHz / 9.999 MHz
- Duty Cycle – 10–90%
- Temperature – −20 to 1000 °C / −4 to 1832 °F
- Diode Test – Open voltage 3.2 V
- Power – 2× AA batteries (not included)
Package Contents
- 1× Artech A5020 Digital Multimeter
- 1× Type K Thermocouple
- 2× Testing Probes
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- auto-ranging
- Auto-ranging means a device automatically selects the right internal measurement scale (range or gain) for the signal it is reading, instead of you choosing it by hand. It appears in instruments and sensors such as multimeters and light or current sensors, and makes them easier to use across widely varying conditions without manual range or gain changes.
- capacitance
- Capacitance is the amount of electrical charge a capacitor can store, usually measured in farads such as uF. Choosing the right capacitance value matters because it affects how well a circuit filters power, handles timing, or stores short bursts of energy.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- duty cycle
- The fraction of time a signal or power source is switched on during each repeating on/off cycle, usually given as a percentage. It is central to PWM (pulse-width modulation), where adjusting the duty cycle controls things like LED brightness, motor speed or heater power, and on devices such as proximity sensors it can also affect detection range, response speed, accuracy and power use.
- RMS
- RMS is a way of describing the effective level of an AC signal, such as an audio output voltage. It helps compare audio output levels more meaningfully than a peak voltage number.
- Thermocouple
- A temperature sensor made from two different metals that produces a very small voltage depending on temperature. Because the signal is tiny, it usually needs careful amplification and accurate measurement hardware.
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Artech A5020 Digital Multimeter Datasheet
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Supplier page — sparkfun.com
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