Innova 3320 Auto-Ranging Digital Multimeter Review

Innova 3320 Auto-Ranging Digital Multimeter Review

For any technician or electronic hobbyist, a digital multimeter is a vital tool to invest in. The best digital multimeters will accurately measure anything related to electricity effortlessly.

With the competition being high, choosing your first multimeter can be a perplexing situation, especially with all the big brands trying to feed you their own expensive models. Some of those high-quality ones can be great like the Fluke 15B+. Others might not be worth their price.

But if you’re just getting into the world of automotive electronics or require a multimeter, then allow us to bring forth the Innova 3320 Auto-Ranging Digital Multimeter review. Not only is this device great for beginners, but it is also within the affordable range for professionals too!

Innova 3320 Auto-Ranging Digital Multimeter Review


  • Multi-colored LED for battery testing functionality
  • Lightweight and compact design
  • Can measure a wide range of units, enhancing versatility
  • Rubber body with corner guards to minimize fall damage
  • Auto-shutoff option with low battery indicator


  • Kickstand and hand strap design could be better
  • Does not feature a backlit display
  • Can experience lag with auto-ranging functionality

Just like most digital multimeters, the Innova 3320 will measure the basic AC/DC millivolts, milliamps, resistance, and all those units you would expect.

Whether you have serious projects or just an enthusiast, this device packs enough punch to cater to your needs. Additionally, the 3320 features a battery tester with various color-coded lights to help you interpret the results better. It is also a necessary accessory for welding.

Let’s talk about this the Auto-Ranging facility Innova has packed into the 3320. This function will automatically determine the proper range of input, saving you any extra work and also time.

Apart from the battery check function, this feature should work well with any setting. Just put in the milliamp ranges and select whether you want DC/AC, and you’re good to go.

Large Screen Display

Straight out the box, you’ll notice the large digital display on the face of this device. Within this price range, the quality of this display is a real steal for anyone! You’ll find it super easy to work with this device, especially because of how compartmentalized all the information is when displayed to you.

Innova 3320 Auto-Ranging Digital Multimeter

Durability and Longevity

Any device you invest in, no matter the price, is expected to give you a satisfactory level of service for a considerable period of time. This multimeter from Innova will truly exceed your expectations when it comes to longevity because of the well-protected body it comes in.

Before we get into protection from electrical short circuits, the device’s physical protection is what really stands out. The rubber holster on the multimeter protects the device from any sort of short circuits. It also has corner guards that would minimize any sort of fall damage that might disrupt the interiors.

For basic household usage, this device should work fine with an input resistance measuring in at 10MΩ. The 3320 will be able to withstand a minimum temperature of 32 degrees Fahrenheit and a maximum temperature of 104 degrees Fahrenheit.

But we’d advise you not to test that as it might affect the long-term performance of the device.

Robust Design

Innova really put a lot of thought into designing this multimeter, concentrating their efforts into giving you a sleek device. The body of the device is made of super lightweight materials, making it easy to carry around.

Overall, the whole design aesthetic of this multimeter is great, with the wires and other components complimenting the body of the unit. The input dial down the middle of the device is quite prominent, with 13 stations to choose from.

Furthermore, Innova made the battery compartment of this device easy to access, so you can replace them easily. This is particularly useful if you’re someone who is fiddling around with electronics all the time.

Battery Warning

We need to put extra emphasis on the auto shut off option of this device, allowing you to save your battery health. This is a common issue most people face, where they forget to turn off their tools after use.

Innova 3320 Auto-Ranging Digital Multimeter

After 15 minutes of inactivity, the multimeter will shut itself down automatically, saving you a few bucks on replacement batteries too!

Frequently Asked Questions (FAQs)

Here we have the most commonly asked queries regarding the Auto-Ranging Digital Multimeter:

1. Will I be able to test out electric outlets at home with this?

Since this device is rated as a CAT 2 meter, we would advise against that. The internal limitations of this device will not be able to handle the high voltage your sockets might have.

2. How low can the Ohm reading go?

It will easily go as low as 0.001 Ohms, which is actually more than necessary because you would normally require only two decimal places.

3. What is the specialty of the battery testing feature? Is it unique to this device only?

Having a battery testing feature gives this device an edge and saves effort on your end as well. You wouldn’t have to manually check voltages to decide on which volt battery you have to use. Simply connect the test leads, and the display will indicate which volt is required with a diode indicator.

4. Can I use this device to test Ohms on my speaker?

Yes. However, we must inform you that it might not be highly accurate. A speaker that comes in at 4 Ohms might be displayed as 3.8 Ohms, which isn’t accurate but not far from it either.

5. Is this Auto-Ranging Multimeter easy to use?

Of course! If you’ve used a multimeter before, you will go by with this device easily. For beginners, refer to the user manual for more information to help you with your first reading. You can also check multimeter user tutorials.

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Final Verdict

In this compact form factor, the 3320 packs a lot of useful features. For beginners or even a professional, this device can be a great starter. The points mentioned in the Innova 3320 Auto-Ranging Digital Multimeter review above will help you decide whether this device is suited to your needs.

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