Innova 3340 Professional Automotive Digital Multimeter, Black

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.

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.

Has a lot of functions and it has helped me diagnose voltage and continuity along with other tasks. The unit comes in a protective case and is overall very nice. It's working flawlessly and is priced very well, particularly when compared to a Fluke. Highly recommended.

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.

Excelente multímetro digital. La calidad se siente muy buena y las mediciones son rápidas y precisas. La pantalla es clara y fácil de leer, y los botones son sencillos de usar incluso para alguien que no es experto. Es una herramienta muy útil para trabajos eléctricos en casa. Muy satisfecho con la compra, lo recomiendo. 🔧📟👍

Muy buen producto. Llegó con todo lo mencionado.

Excellent product. Accurate and easy to use.

Does not function as good as a Fluke but does the job. Kept as a backup. The functions are there but it lacks the fidelity I am used to with a Fluke. Leads are cheaper and can tell will not last like my old Bluepoint I intended to replace it with. Good for all things it’s listed for but have not tried advance dwell or pulse width yet. Probably good for occasional use.

Se ve de buena calidad aun no lo e probado llego a tiempo

Awsome product, second one i buy (Gift) use it all the time never fails, does what its meant to do. Shipper is fast, arrived on time for the Christmas season.

Pretty good unit, serves my needs, lots of good features for auto DIY , watch any UTube video on it and you can see how versatile it is. Dropped one star for me because there is no back light feature and a magnetic grip on the back would be good but that just my personal take on it. I work on furnaces from time to time and this unit is very handy for that but a magnet on the back would be invaluable. As it is it can be awkward to find a good holding place for it. Apart from that I would highly recommend this unit.

This is an essential tool required for any box. Ranging from the auto enthusiast, young professional or a certified master technician. It does the job. helps you pin point problems ahead of time saving you money in the long run. Quick and easy manual allows you to navigate this tool unlocking it's full potential. Highly recommended.

Fonctionne très bien tout les accessoires sont la