Extech EX330 Autoranging Mini Multimeter, 12-Function, NCV, Type K | AC/DC V/A, resistance, capacitance, frequency, Type K temp, 4000-count, NCV, holster, included probe

Excellent little multimeter for the house and hobby digital electronics work. This multimeter is a serious step up from the cheap auto parts meters but much cheaper then a comparable Fluke. I personally prefer Fluke but couldn't justify spending two or three times as much money for what I needed it for. Speaking of, I have used it for home wiring projects, electronics repair, testing batteries, temperature readings, and resistance/capacitance testing. All readings were within expected ranges however I don't have more precise reference equipment required to check ranges/tolerances. It's certainly accurate enough for my purposes. Pros: - Price - Stock leads are quite nice and ~4' long plus a temperature probe was included - Auto ranging works very well - A lot of useful functions (described nicely in the product description) including auto off - Kick stand is very convenient for bench top testing Cons: - None really, it does exactly what I expected it to. Features like True RMS reading would be nice however it's hard to expect features like that for the price of this multimeter. I would strongly suggest getting Extech TL809 Lead Kit just for the alligator clips. When you are on the top of a ladder being able to clip one or both wires may save your life!

Very happy with this meter. OK: I am not a digital multimeter expert, (this is my first meter), but after much research, this seemed like the best value in this price range. Seems quite accurate to to me. Testing voltage, continuity, resistance, etc. The autoranging feature is nice - glad I opted for that. You can switch to manual ranging, although I found this a bit confusing. You'll see the goodness of autoranging once you use it. The temp probe was missing when received. However, a quick message to Extech solved that. They sent me one promptly. I have to say, FLIR/Extech customer service is excellent! Also, I read a complaint somewhere about the stand being too flimsy - it's is built into the orange cover. But I think it's fine - it's a stand for the meter. It works. I mean if you were to pull on the leads while using, then yes, I suppose you could knock the meter over, but I have not had this problem. The leads seems good. I also read where getting replacement higher quality leads can be helpful. But the stock leads are great so far. Highly recommend!

I do a fair amount of electrical work for my job so I have experience with electrical equipment. Needed a cheap meter that I could keep at home and had enough features to cover a wide array of home and vehicle projects. At a cheap price, this fills the role nicely. Works as advertised and shipping was fast. The only reason I give this 4 out of 5 stars is due to the battery harness which does not appear to hold the batteries as well as one would hope. Impacts to the meter, (In this case dropping the meter face up from about a foot or two off the ground) can cause one or more of the batteries to come dislodged. A swift hit in the opposite direction is enough to jostle the batteries back into position. While not a deal breaker, this can be annoying. A simple fix, I have found, is to simply place a nylon washer or plastic spacer between the battery cover and the batteries. I find it strange a problem this noticeable and easy to remedy made it past quality control. Also its worth noting the leads for this are simple touch probes. I have seen other, similarly priced, DMMs that come with interchangeable probes and alligator clips. For whatever reason I thought this meter was going to come similarly equipped with both test lead and alligator clips. This is not a fault with the meter or seller, just something I thought I would point out.

Update August 1st 2014: After Jamie at Extech reached out to me, he is sending out a replacement. I have changed my rating back to 5 stars purely because in the end Extech made it right, the meter fundamentally works well and I'm a happy customer once again! Other manufacturers take note... THIS is how you do it!! Thanks Jamie. Much appreciate your good service. ----------------- This was great to begin with. Then the selector switch started doing odd things. You have to wind it back and forth to get it to register voltage. My original review waxed lyrical about how awesome it was(see below)... but this is now ready for the trash after only 15 months light hobby use. Also, the end of the temperature probe fell off and "browned" during the testing of an oven.... I was no where near the maximum temperature range of the probe. The Amazon returns window is only 1 month. Back to fluke for me!! My original review: ----------------- I have always had Fluke multi meters but decided I'd see what I could get at the lower end of the market. This little meter works perfectly and I particularly like the bang you get for your buck. From the non contact voltage detector to temperature probe to the capacitance and frequency meters. It all works well enough for you to figure things out and that's what it is all about! An excellent hobby level multimeter. 5 stars!

I have used this unit for AC, DC, Capacitance, Resistance, and Continuity measurements. It works as advertised and I'm very happy with it given the price point... I have a much much more expensive HP bench DMM that I don't really use at all... thus far the Extech has been fully sufficient. My measurements have been made on stuff running from under 5V (digital) to over 300VDC (guitar amps). No hiccups or false readings. For capacitors, you have to wait for them to charge up to get an accurate reading; I wish the meter would tell me when it thinks it has an accurate reading but once it settles down I'm confident I'm being showed the actual capacitance of the unit under test. I will mention that the first unit I got had a defective non-contact voltage sensor, but Amazon's awesome replacement policy made that right in no time. I will strongly recommend Extech's test lead set:[...] I have found that some of my measurements were not accurate with the included probes (probably due to oxidation on the points under test -- not through any fault of the probes). For high voltage work, e.g. in tube-based amplifiers, having clip-on leads is essential for accuracy and more importantly, safety reasons. Getting killed by 450VDC is no fun, I'm told.

Just got it today so can't testify to its longevity. I gave it 5 stars as I do all products that do what they are advertised to do. So far I have checked every function with the exception of capacitance. They all worked and the readouts were as expected and seem to be well within the product's specs for accuracy. The no contact voltage detection worked at all places where there was voltage but if the meter couldn't get close enough to the conductor the buzzer and light were a bit anemic but they did react. The temp probe isn't much of a "probe", There is just a sensor at the of the wire. It does work though and gave accurate readings in both F and C. Hz and duty cycle registered 60Hz and 50% on household utility power. I didn't like the fact that the batteries were already installed, hope they are fresh but will probably replace them if I need the meter for anything important. The auto-ranging feature is great and will probably save me and many others from operator head-space disasters. Not a complaint since the product wasn't described as having a back-lit display but sure would be nice if it did. I am somewhat mystified as to why manufacturers don't just go ahead and stick in an LED. This has been mentioned before in other reviews but if you buy this product before you send it back or to the trash can for the "OL" problem make sure the leads are fully inserted into their respective receptacles. When fully seated the terminals will be flush with the meter case and won't go any further into the mete. There was significant resistance the first time I inserted the leads into the meter and I did get the "OL" greeting until I fully seated the leads.

I love this little multimeter! I never realized how much life could improve just by switching to a real instrument over the $10 analog model I bought from Home Depot. I've had it for something like a year now, and it's pretty amazing. I can't say enough good things about it, but I'll try to focus on the highest of the highlights: the NCV button! It's so nice to be able to diagnose so many electrical problems just by holding down a button and gently moving the device along a cable or a wall, listening for the spot where the current stops. And it's a great relief to be able to flip an unlabeled (of course) breaker, press the NCV button, and know if that was the switch for the circuit I'm about to work on. Say I'm on the outside of a trailer, working on the water heater that's only accessible by removing an exterior wall panel. As described above, I've found the breaker that goes to this circuit. But that was yesterday; did my father-in-law flip it back on in the meantime? I'd better get down off of the ladder, walk around the house, and have the lady who lives here walk me back to the bedroom (awkward) where the breaker box is so I can check it, right? No way! I can just hit the NCV button and find out. (And then, just because I've been stung too many times by "disconnected" electric fences back on the farm, I go ahead and test it with the probes to confirm. But it's good.) I've also used the NCV function to find faults in power cords on sump pumps, among other things. One little nick in the insulation, it turns out, can corrode an entire length of wire... But I digress. Another great feature is the... What is it called? The one where you switch it to measure resistance and then toggle the mode a couple of times. Then you touch points with the probes and if they're connected (i.e., sufficiently low resistance), it makes a noise. You don't even have to look at the meter! It's great. I use that all the time to see which points in one place match up to which points in another place. Handy for when wires change colors on the other side of something that would be a pain to move, and the audible signal means I can focus on touching the right points instead of trying to watch the display. I've used most of the functions at one time or another, but those are the most common ones for me. At work yesterday, I fixed a multi-thousand-dollar refrigerated centrifuge with it by using a combination of the DC voltmeter, ohmmeter, and frequency functions. I've fixed a lot of other things with it, too, but that was all for yesterday. I'm not an electrician or anything, just a guy who likes to tinker with stuff and works in a laboratory. I really ought to have my boss invest in one of these for the lab so that I won't have to keep carrying mine back and forth from home. I've gotten to the point where I look at it and think, "If I don't take it with me, I'm sure to need it." And it's true. Despite my enthusiasm for it, there are a few things I would change about it if I could: 1. I would include some leads with alligator clips with it. Come on, those are just too handy not to have. I suppose I can buy them separately, but it would have been nice to include them. 2. I really wish it had some little clips on the side to hold the probes. I have to wrap the wires around it or let them dangle; neither is satisfactory, and both leave you with surprisingly sharp points sticking out. I guess I should invest in a nice rubber band, and maybe something to cap the points. I don't know, like I said, I'm not a professional or anything. 3. The temperature probe is a separate attachment that I almost never have with me, because who wants to carry that, too? I don't know how to fix this, but it would be nice if it could be improved somehow. Also, the cable for the temp probe is really stiff. I don't know how necessary that is for the functionality of it, but if it could be as pliable as the two contact probes (or leads, whatever; I'm an amateur), that would be a step in the right direction. I'm kind of worried about it snapping due to metal fatigue, honestly. It's that stiff.

The meter is nice and compact with decent build quality for the price. Voltage, current, resistance and temp were spot on in my tests. NVC worked ok. Capacitance was unusable though. Not sure if it's a luck of the draw with this meter, but I need capacitance to work so it's a deal breaker for me. The protective sleeve on the temp probe that came with mine was frayed right out of the box. It's a shame as I had high hopes for this lil meter...

Funktioniert gut, für den Preis wertige Verarbeitung,

Very reasonably priced quality product. One of the best Multimeter second to Fluke.

Piccolo e leggero, ha i caratteri grandi . Si spegne opportunamente dopo 15 minuti di no utilizzo. Preciso e veloce. Non ho mai provato uno strumento migliore in questa fascia di prezzo. Il Fluke 187 va meglio, ma costa un ordine di grandezza di più . Lo consiglio, anche perché rileva la presenza di AC in una presa, senza contatto con i cavi, misura i microamperes, le capacità, le temperature a la frequenza...

Multimetros digitales los hay por "cuatro duros", ahora cuando queremos según que prestaciones el tema no es tan fácil, cosas que encarecen a un aparato de medida, medir intensidades desde µA y mA DC y AC, por ejemplo para comprobar lo que consume un equipo en reposo, hasta 10A (no tengo intención de medir tanta intensidad, para eso lo suyo es una pinza amperimetrica) Para esto el equipo tiene que estar protegido mediante fusibles, dos en este medidor (una para los 400 µA hasta los 400 mA de 500 mA, y el de 10 A para las mediciones desde los 400 mA a los 10 A) Tiene unas buenas puntas de prueba (de 135 cm) que están muy bien protegidas para evitar descargas eléctricas, véase los conectores al medidor que tienen un sistema que imposibilita un contacto accidental con la parte metálica (que podría estar bajo tensión) Por lo demás ofrece un muy amplia rango de medidas (notese que las escalas para intensidades son las mismas pa oriente continua y alterna, cosa que en los mas económicos no suele ser tener, siendo menos sensibles en AC) La sonda para medir temperaturas es muy precisa (ojo que tiene polaridad, yo la conecte al revés y en el congelador me marcaba 39º y subiendo, una vez puesta como la polaridad correcta, marco enseguida -20º) En resumen estamos ante un medidor no profesional, para eso están los FLUKE y METRIX que son de los que duran y aguantan de todo (los usaba en mi trabajo) con este, y cuidandolo tendré un mediador completo, fiable y seguro, a un precio muy bueno Nota, esta muy bien el acceso al compartimento donde están las pilas (2 AA) y los fusibles, aunque cuesta un poco extraer los fusible porque los portafusiles quedan bastante hundidos dentro de la carcasa

I wanted an inexpensive autoranging multi-meter to replace my aging Beckman that I bought when I was still in collage. Have done some basic tests with the meter and it seems to be fairly accurate and fully functional. This unit (EX330) does just about everything my older meter did at less than half the price (actually much less than half if you adjust the dollar value). The unit is easy to read. The supplied probes seem adequate but, I have also ordered the Extech TL809 Electronic Test Lead Kit ( https://www.amazon.ca/dp/B0012VWUI6/ ) This also comes with a temperature probe, but it seems a little bit on the fragile side so it should probably be used with care in order not to break it. The meter feels fairly solid and well built, though I wouldn't advise just tossing it around. The non-contact high voltage dectector is a nice touch. This was one of the 5 inexpensive meters that Dave L. Jones @ EEVblog reviewed on YouTube and for its price range faired quite well. Now, don't expect this to replace an upper end meter like a Fluke as it is not in the same class. For general or hobby usage this should be fine as, according to the EEVblog, it should be fairly safe to use.