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Availability:
In Stock.
Arrives
Friday, Feb 27
Style: 3340
Features
- Designed to pinpoint engine problems; tests alternator diodes, duty cycle, solenoids, breaker points, wiring, switches and more
- Features auto-ranging, auto shut-off and over-load protection
- Measures up to 15 amps for device testing
- 10 MegOhm input impedance; safe for electrical and automotive use; prevents damage to the vehicles ECU
- Includes temperature probe, inductive RPM clamp and carrying case
Description
The INNOVA 3340 Automotive Digital Multimeter is the pros choice for a high- quality multimeter. The pro quality features help pinpoint engine problems while the 10 MegOhm impedance prevents damage to the ECU. It Includes temperature probe to measure temperature in both Celsius and Fahrenheit. Also use the inductive pick up to vehicle RPM (including coil on plug vehicles). This unit provides hands-free testing with test lead holders. Additional features include auto-ranging, auto shut-off, over-load protection, automatic zero adjustment and reverse polarity protection. The min/max and hold buttons save retrieved data and the rugged corner guards provide drop protection. The INNOVA 3340 is great for testing alternator diodes, duty cycle, solenoids, breaker points, wiring, switches, and more.
Brand: Innova
Power Source: Corded Electric
Style: 3340
Color: Black
Item Weight: 0.5 Pounds
Brand: Innova
Power Source: Corded Electric
Style: 3340
Color: Black
Item Weight: 0.5 Pounds
Item dimensions L x W x H: 12.5 x 4.5 x 6.5 inches
Measurement Type: Multimeter
UPC: 042173033409
Manufacturer: INNOVA
Global Trade Identification Number: 09,
Product Dimensions: 12.5 x 4.5 x 6.5 inches
Item Weight: 8 ounces
Department: unisex-adult
Item model number: 3340
Batteries: 2 AA batteries required. (included)
Is Discontinued By Manufacturer: No
Date First Available: July 7, 2004
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Feb 27
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 1485.625 cubic inches
I have other Innova devices. They work great. This multimeter is no exception. It comes with a lot of functions that higher end multimeters don't come with unless you spend a lot for it. It even comes with an amp clamp that plugs in to the meter, making it kind of a two-in-one tool. I have other multimeters and I have an amp clamp, but I think this one has become my favorite.
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Reviewed in the United States on December 31, 2025 by Michael L Alexander
Size: 1485.625 cubic inches
Great tool. Does everything it says it will do. Very nicely build and easy to carry around.
Reviewed in the United States on August 3, 2025 by Amazon Customer
Size: 1485.625 cubic inches
Nerd Alert: I'm an electrical engineer and spend a lot of time in my test lab. I never heard of this brand, but thought I'd give it a go. I was drawn in by the attachment for spark pickup. I haven't used it exhaustively yet, just tried it and it worked on a motorcycle fine. I'll post back after more experience with it. Regarding the meter functions, it's pretty crazy how many functions this little meter has. I doubt I'll need all of them, but nice to know they are there if a difficult problem occurs on a repair. The temp gauge is nice, but I find for repairs a non-contact IR is much more effective. But, it's better than nothing. So, 5 stars for the multitude of functions. Dwell is really great for points ignition on old motorcycles and cars. I was checking calibration on equipment in my lab this week, so I checked this meter for the heck of it. I'm using a Fluke 5100B, and I was pretty surprised at the accuracy. Volts, Amps, Frequency, Duty Cycle, all spot on. Really, like <0.5% error, and usually just a few digits off on the last significant shown. Even high frequency AC volts was right on (up to 400Vac 20kHz). Your results may vary, since manufacturing tolerances and final factory calibrations can vary. But, very pleasantly surprised. So, for me, super functionality, super high accuracy, super price. Five Stars.
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Reviewed in the United States on June 6, 2014 by A. Gara
Size: 1485.625 cubic inches
I bought this because it is the only automotive meter I could find that offers a variety of RPM measurements: inductive pickup for spark plug wires; direct primary coil voltage monitoring for COP (coil on plug) systems; conventional old school tach measurements for distributor systems (for a wide range of cylinder counts); and DIS or waste spark systems. And of course dwell angle measurements. Most modern automotive meters have dispensed with all but the inductive pickup method but I like to have more options. I compared the Innova 3340a DC voltage readings for 1.5 v and 9 v batteries against a Fluke 87 V and measurements were within one or two-thousands of a volt. That is pretty good. When selecting DC volts the display shows 200-300 mV when no measurements are taken. This is due to internal noise from the autoranging circuitry. If I touch the probes together the display zeros out. As I stated, the DC volts measurements I took were very accurate. I compared resistance readings between the 3340a and Fluke for a variety of resistors from my electronics junk box and obtained excellent agreement between these instruments. Examples of 3340a vs. Fluke: 20.5 vs. 20.4 ohm; 27.0 vs. 27.4 ohm; 101.2 vs. 101.2 ohm; 147.5 vs. 147.6 ohm; 986 vs. 986 ohm; 51.1 vs. 51.1 Kohm; 730 vs. 729 Kohm. These resistance readings were off by only 0.1% on average. For my 3340a the accuracy is better on average than the range stated in the product literature. UPDATE Mar 10, 2020: I've had a chance to test the tachometer functions on a lawn mower that has a tach terminal (for the "RPM" function) and a high voltage spark plug wire for the inductive pickup clamp with the "CON" function. I compared the readings of the 3340a with those of a SunPro digital tach and a GTC505 ignition analyzer with a capacitive probe. With both the direct hookup "RPM" and inductive hookup "CON" functions, the average RPMs of the 3340a appeared to agree with the SunPro and GTC505 standards. However the 3340a gave very erratic and jumpy readings making it difficult to obtain an average RPM by eye. (With the "CON" function I had to halve the RPMs because a lawn mower delivers two sparks over the 4 strokes per cycle.) The "DIS" function gave confusing results. Maybe Innova needs to add some simple circuitry to average or smooth out the jumpy tach inputs. Maybe they need to add basic filtering circuitry to handle electrical noise from ignition systems. Either way the tach functions need some minor improvements to make the display more readable. This meter is a fine and accurate meter for basic electrical functions and is very well conceived. I hope that Innova does what they need to do to improve the tach functions and make it the great meter that it deserves to be, even if they have to increase the price a little.
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Reviewed in the United States on February 6, 2020 by The geeks shall inherit the earth
Size: 1485.625 cubic inches
Compact accurate and easy to use. Nice storage case included.
Reviewed in the United States on June 6, 2025 by LL
Size: 1485.625 cubic inches
I own a fluke 23 for my job. The amp scale, both 10A and mA function stopped working. Took it to a high end repair center. They found nothing wrong. I watched them test the amp function again and it did register correctly on the test machine. So we went out to my truck and attempted a parasitic draw test and it was most inaccurate. The tech was amazed. He tried several other tests and all passed. Bottom line, How about a new one? Only about $300. Saw this meter on amazon, on sale. Works on all scales! Very easy to see read out and to use. This meter gets used everyday on the job. No problems. Paid $225 for the fluke in 92, cant complain too much about the fluke, it served me well, but as an extorted american worker I dont have the money to replace it. Recommend using better leads than what came with the innova.
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Reviewed in the United States on April 1, 2013 by Robert Rehberg
Size: 1485.625 cubic inches
3 stars because the picture show an illuminated screen, this meter does not do that, the rest is great
Reviewed in the United States on January 19, 2026 by charles
Size: 1485.625 cubic inches
I was hesitant to get this due to the negative review a buyer left about Dwell/Tach functions not working on his old volkswagens. HOWEVER ... I decided to purchase it and try it out for myself. I have a 78 VW Bus (points ignition) and I just checked my dwell to see if the dwell feature functioned correctly. I hooked everything up, as per the instructions in the manual, and it worked fine. The negative review could have been user error, or it could have been a bad unit, but *MINE* works great. I will be buying the Equus 5568 Pro-Timing Light with Tool Case in the very near future to complete my tuneup needs. Comes with: The multimeter itself, Instructions (please read them), a nice nylon storage pouch, test leads, Temp. Probe, and a clamp style lead for ignition wires etc. Do yourself a favor and order yourself some Test Lead Alligator Clips when you purchase this, they are not included and VERY handy to have.
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Reviewed in the United States on September 15, 2011 by Criswell570