Innova 3300 Digital Multimeter: Hands-Free Measurement for Accurate Results

Galen EvansGalen Evans: I'm an engineer with access to a high-precision certified calibrator and decided to evaluate the Innova 3300a. It is one of thinnest, smallest, flat form-factor Volt-Ohm meters available. It easily fits into a shirt pocket (see picture). There is no case or cover over the display. The probes are permanently attached, but the connection seems sheltered by the wrap-around cable storage channels with probe clips. The probe tips have removable protectors for crowded test points. (See Picture) Also, it is easy to unfurl one lead and use the other while still stowed away snapped to the meter; or one can use both leads while the meter is held to your wrist by elastic bands. So, overall my first impression is that it is an improved design for a small volt-ohm meter. But, is it accurate? My old mini-meters are more guesstimate devices than measuring tools.

The meter functions are Volts (AC & DC) and Ohms with the related diode (Applied voltage below 1.000 VDC) and continuity functions (beeps when resistance is below 60 Ohms). There are no functions for Amps, frequency, min/max, duty cycle, temperature, battery check, or anything else; just Volts and Ohms. However, Volts and ohms...

United States on Sep 11, 2023

Tianyi L.: The product is small in size and very easy to use

United States on Sep 10, 2023

M F: Wires are too short
Tips are missing clamps or space to clamp them onto surface, say ground
Beep is too quiet
Sometimes starts from the 3rd attempt after switching it on.

Australia on Apr 01, 2023

Lauren Husted: Super easy to use. Very accurate. I've used multi meters in past by fart this was the easiest takes the guess work out of the equation. Couldn't locate my old meter so I figured it was older. Gave this meter a shot. Very impressive 👏

United States on Mar 29, 2023

EBM: Compre este multimetro porque indica que tiene una impedancia de 10Mohm, lo problé en un circuito de alta impedancia de salida y el voltaje a medir es "absorvido" por este equipo. Realizo la misma medición con un voltimetro calibrado de alta impedancia y la medición de voltaje es exitosa.

Mexico on Jan 23, 2023

Zeta San: Es genial, de tamaño compacto y super sencillo de colocar en la muñeca, para el modo "manos libres"

Mexico on Dec 25, 2022

Gani Tio: I only need it to do simple tests and I love it. No complicated menu and the straps are handy

Australia on Nov 09, 2022

Abu Musa: Does what it's suppose to do. Very good for newbie DIYers like myself

Australia on Feb 12, 2019

Comdet: This is a good choice if you're looking for a decent performing multimeter for a low price. No, you won't get the accuracy and durability of a Fluke, but it is much better than the other low-priced multimeters I've tried. Voltage and resistance readings are very accurate when checked using a high-end meter, and the probes are of better than usual quality for this price point. It also has a clear, easy to read display, probe holders, and an elastic band on the back for ease of use.

I debated getting this or the next model up (3310) but found, after reading the specs on the Equus site, that the accuracy is the same for both. The 3310 does add some features, such as a continuity tone, but since I didn't need those, I went with the lower-priced 3300.

The only significant complaint is the tough to open clamshell packaging. Hate that!

It's a good choice for general homeowner usage, and better than the typical cheap multimeters out there. Highly recommend.

United States on Jun 07, 2013

P. Killion: I really like this little device, price considered of course. I wouldn't expect it to be as dead-accurate as pricier models, so for true contractors/electricians/repairmen, this is at best a backup unit, but for the average homeowner this is a pretty nice little device. I've used it to check Ohms on speakers (they did fluctuate so I doubt it was completely accurate, but gave a general guideline at least), as well as to test for which line is "hot" while replacing a lightswitch with a timer lightswitch for our exterior lights. Our lightswitches use the two-blacks and a neutral, so it's important to identify which black is hot so the item isn't damaged (and also for safety to ensure the correct circuit is off).

So, for the homeowner who's looking to do some mundane testing, making sure electrical lines are safely off, those sorts of things, this device seems very solidly built, and while perhaps not accurate for precise measurements, seems accurate enough for many uses (our AC line read at 122 volts for example). Also, the instructions aren't clear on how to use the device, but basically you use the red prod to connect to hot for testing, and the black to connect to ground or...

United States on Mar 18, 2013