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AstroAI Digital Multimeter, TRMS 4000 Counts Auto-Ranging Ohmmeter Voltmeter 1.5v/9v/12v Battery Voltage Tester Measure Voltage Current Resistance Diodes Continuity Capacitance with NCV Function


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  • WIDE APPLICATIONS - The AstroAI M4K0R Multimeter accurately measures AC/DC voltage to 600V, Current to 10A, Resistance to 40MΩ. You can use it for continuity test, diode test, battery test and live wire test. Includes 1.5V, 9V and 12V battery test modes to easily test a wide variety of batteries. Multimeter light turns red for low voltage and green for enough voltage.
  • NON-CONTACT - Fully safe non-contact voltage testing with sound and light alarms. You can detects AC voltage without the use of test leads. Uses NCV function:When the Meter senses a strong AC signal, the red indicator light will turn on and the buzzer will emit a quick beep.
  • THOUGHTFUL DESIGN - Support Data Hold, Max, Auto Shut-off, low battery indicator and continuity buzzer. Includes Convenient features like Audial and Visual Alarm, LCD Backlit Screen and Flashlight make it easy to use. Two 1.5V AAA batteries are included in the package.
  • ENSURES SAFETY - Double ceramic fuse is anti-burn and protects from overloading. The multimeter has passed overvoltage category III 600V safety standards. The silicone cover is able to protect the multimeter from failing damage and prevent electric shocks.
  • ADDITIONAL TIPS - This Multimeter is designed to troubleshoot a variety of automotive and household electrical problems safely and accurately. It’s a suitable tool if you want to do some household or commercial improvements whether DIYers or Hobbyists. Combined with Amazon's excellent delivery, we provide lifetime technical support.

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AstroAI Digital Multimeter 4000 Counts TRMS, Model M4K0R

The AstroAI Multimeter is perfect for diagnosing automotive and household AC/DC current, voltage and resistance problems. It also makes it easy to measure battery voltage at 1.5V, 9V and 12V. Powered by two AAA batteries the AstroAI Multimeter is an essential piece of equipment.

  1. AC/DC Voltage/ Resistance/ Diode/ Continuity
  2. 1.5V/9V/12V Battery Voltage Test
  3. Non-contact voltage detection
  4. Backlight Display/ Flashlight
  5. Overload Protection/ Data Hold


    The AstroAI Multimeter’s unique function alerts you to live wires with a red indicator light and audio alarm.


    Place probe close to electric sockets, outlets and terminals to test voltage and live wires safely.


    Connect test leads to the circuit, if it’s connected a buzzer will sound and the value will be displayed on the LCD screen.


    If you want to record the measurement value, just press the 'Hold' button, then the reading showed on the screen will be locked.


    The flashlight acts a torch and the backlight perfectly illuminates the LCD screen so you can work perfectly in the dark.


    Check the battery meter to see how much power’s left. Takes two AAA batteries.


    Your device will close down after 15 minutes of no-use to save power. Switch the rotary dial to re-start.


    Enjoy anti-burn protection and high safety measures with the double ceramic fuse and protection circuit.

The AstroAI True RMS 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. Run tests on diodes and transistors while being able to measure voltage, current, resistance, continuity, capacitance, all on one device. This multimeter is designed to be used in commercial settings, but can also be brought home to use with automotive or household electrical problems.


Digital Display: 3 ¾, 3999

Sampling Speed: 3 times per second

LCD Size: 55 x 31mm

Range Selection: Auto or Manual

Polarity Indication

Overload Indication

Low Battery Indication

Operating Environment: 32°F~104°F (0°C~40°C); <80% RH

Storage Temperature: 14°F~122°F (-10°C~60°C); <70% RH

Power: 1.5V x 2 AAA Battery Included

Dimensions: 150x73x50mm

Weight: Approx 219g

Safety/Compliances: EN61010-1 CAT III 600V

DC Voltage: 400mV/4V/40V/400V/600V ±(0.5%+5)

AC Voltage: 400mV/4V/40V/400V/600V ±(1.0%+5)

DC Current: 40mA/400mA/10A/ ±(1.2%+5)

AC Current: 40mA/400mA/10A/ ±(1.5%+5)

Resistance: 400Ω/4KΩ/40KΩ/400KΩ/4MΩ/40MΩ ±(1.0%+5)

Capacitance: 4nF/40nF/400nF/4μF/40μF/400μF/4mF ±(4.0%+5)


Package Includes

1 x AstroAI 4000 Counts True RMS Digital Multimeter

1 x Test Leads (Pair)

1 x User Manual

Technical Details

Package Dimensions 6.42 x 4.25 x 2.13 inches
Item Weight 7.72 ounces
Model M4K0R
Measurement Type Multimeter, Ohmmeter, Voltmeter
External Testing Certification CAT III 600V
Power Source Type Battery Powered
Batteries 2 AAA batteries required. (included)
Warranty 3 Year Warranty by AstroAI


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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