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Best Sellers AstroAI Digital Multimeter True RMS 4000 Counts Volt Meter Auto Ranging Professional Multi Tester Measures AC/DC Current, Voltage, Temperature, Resistance, Continuity, Frequency, Diodes, Duty


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  • WIDE APPLICATIONS: Digital Multimeter has wide range of tests for AC/DC Voltage, AC/DC Current, Resistance, Continuity, Capacitance, Frequency and Temperature; Tests Diodes
  • PROFESSIONAL MULTIMETER TESTER: Include Auto-Ranging capability, and True RMS for measuring both AC Current and Voltage
  • EASY TO USE: With convenient features like Data Hold, Large LCD Backlit Screen, Kickstand and Low Battery Indicator, the multi meter electric tester makes taking and recording measurements easier than ever before
  • IDEAL FOR COMMERCIAL: Settings where it can handle the demands of a long workday, from the durable exterior to the wide range of heavy-duty capabilities
  • SAFETY FIRST: Two integrated fuses of the voltage tester rated at F500mA/600V and F10A/600V; Explosion-proof ceramic fuses provide maximum safety; The fuses can protect the multimeter effectively; Overload protection on all ranges. 3 Year Warranty provided by AstroAI

AstroAI 4000 Counts True RMS Digital Multimeter

The AstroAI multimeter is designed to be safely and accurately used by professionals in a commercial setting or weekend DIYer's that need a little more power utility from their standard digital multimeter. It's easy and safe to operate with advanced features built for measuring seemingly everything.

  1. True RMS 4000 Counts
  2. Auto Ranging
  3. Date Hold
  4. Backlit LCD
  5. Kickstand
  6. Double Protection
  7. Low Battery Indication

Versatile Use

This multimeter is designed for use in basic commercial settings, but can also be brought home to use with automotive or household electrical problems.

Trouble Shooting with Maximum Safety

  • Accuracy

    DC Voltage: 400mV/4V/40V/400V ±(0.8%+3);600V (1%+5)
    AC Voltage: 400mV ±(1.2%+5); 4V/40V/400V ±(1.0%+8); 600V ±(1.2%+5)
    DC Current: 400μA/4000μA/40mA/400mA ±(1.2%+8); 4A/10A ±(1.2%+8)
    AC Current: 400μA/4000μA/40mA/400mA ±(1.5%+8); 4A/10A ±(2.0%+10)
    Resistance: 400Ω/4KΩ/40KΩ/400KΩ/4MΩ ±(1.5%+3); 40MΩ ±(1.5%+3)

  • Anti-Burn Dual Fuse Protection

    Built-in F500mA/600V and F10A/600V explosion-proof ceramic fuse tubes protect the multimeter effectively and provides overload protection across all measurement ranges. Double Protection and a high safety level.

  • Widely Used

    AstroAI multimeter is widely used for Auto Repair, Appliances Repair, Electronic Repair, Mechanical Inspection, DIY project, Teaching.

  • Backlit LCD and Data Hold

    Large digital display with white backlit LCD for visibility in dimly lit areas; It is often easier to use the data hold to easily read and record data.

  • Low Battery Indication

    The Indication lets you know exactly when to replace the batteries.And automatically shutting off after 15 minutes of inactivity for saving power.

  • Full Support and Always Protected

    Open up the support stand to prop up the multimeter and make reading measurements easier. The rubber sleeve ensures that the multimeter is always protected from wear and tear while on the job.


Sampling Speed 2 times per second
Operating Environment 32°F~104°F (0°C~40°C); <80% RH
Storage Temperature 14°F~122°F (-10°C~50°C); <85% RH
Power 3 x 1.5V, AAA Batteries Included
LCD Size 55 x 31mm
Dimensions 145x70x35mm
Weight Approx 157g
Safety/Compliances EN 61010-1 CAT III 600V
DC Voltage 400mV ±(0.8%+3), 4V/40V/400V ±(0.8%+3), 600V (1%+5)
AC Voltage 400mV ±(1.2%+5); 4V/40V/400V ±(1.0%+8); 600V ±(1.2%+5)
Temperature -40°C~1370°C; -40°F~2000°F (2.5%+4 depending on temp)
DC Current 400μA/4000μA/40mA/400mA ±(1.2%+8); 4A/10A ±(1.2%+8)
AC Current 400μA/4000μA/40mA/400mA ±(1.5%+8); 4A/10A ±(2.0%+10)
Resistance 400Ω/4KΩ/40KΩ/400KΩ/4MΩ ±(1.5%+3); 40MΩ ±(1.5%+3)
Capacitance 40nF±(8%+10); 400nF/4μF/40μF/400μF/40mF/100uF~2mF±(5%+5)
Frequency 5/50/500/5K/50K/500K/5MHz ±(1%+3)


Warranty Period: 36 months

When you purchase products from our website, we will extend the warranty automatically.
you may check details on the My Warranty page after the product is delivered.

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