Technologies SDM3055 5.5 Digit Digital Multimeter, White/Grey

This review Siglent Technologies SDM3055 5.5 DMM. This is a fantastic product to add or update an existing lab, shop. Great for an engineer, Technician or hobbyist. It is very well made with large bright display panel. The user manual is great. Good detail, well written, and easy to understand. I've put it through some test and am very pleased. Checked stability over 48hrs, after 30min warmup (STD). and it was well within specs. Worth the money. Love it, easy to use.

I bought this as part of a home lab setup (thanks, COVID-19). Frequently, as part of my work as an embedded programmer, I need to watch a particular voltage. It's a little thing, but my Fluke DMM, while very nice, turns itself off after 30 seconds or so. It is really annoying. I wanted something that runs on AC, is accurate, doesn't go to sleep. This fit the bill perfectly.

Watch the review and teardown videos before you decide! If you *really need* the name brand, don't even think about it, just get off your wallet and buy something like a Keysight 34450A, Fluke 8808A, or Keithley 2110. But this unit does essentially the same job at a considerably lower price. I have never needed a meter with this much precision before, or if did, my employer provided it, but the project I'm currently consulting on requires better precision than my Fluke 115 or ancient B&K 2945 handhelds. But I just didn't want to shell out for a name brand only to have it gather dust on the shelf after the project was over. Reviews on this unit are mostly positive. The only alternative I saw in this price range was a Rigol DM3058, but the large color graphic display on the Siglent convinced me. The only real drawback that I've seen so far is that it takes ~15 seconds for a low range reading to fully stabilize. Recommended YT vids: * mjlorton review of SDM3055 * Interview with Siglent founder and CEO Eric Qin on EEVblog #826 * SDM3055 teardown on EEVblog #829

I posted some pictures to help clear up some confusion on this meters abilities. MICROAMPS I read the MFG specs on micro amps, it reads like it only goes down to 200 uA. I should read the resolution is 000.01 micro amps to 240 uA the range threshold is 0 to 239 uA then range changes to mA at 240 uA as seen in pictures. RESISTANCE Yes, the continuity voltage is 6.4 volts and the resistance voltage is 1 volt. there was some concern about this damaging components. See the photos of the FLUKE 179's, they have an even higher voltage output . of 2.7 volts for resistance and 7.33 volts for continuity. I have never read a review questioning this on FLUKE. I have been using Flukes for 37 years and have never damaged anything with one. They have been an industry leader in test equipment forever. I think the Siglent will be ok too. SUB OHM READING 4 Wire resistance testing, works great for me even with cheap kelvin probes, see photo's. INPUT VOLTAGE SWITCH Yes, the power input switch is factory set to 220v, it also has a sticker over the power cord receptacle warning you to set your input voltage before you plug it in. BREATHING POWER LAMP Yes, the power led breaths in standby and is on solid when powered up. I like this feature because it reminds me to shutdown my power strip. The only thing I didn't like about this unit is the carry handle is cheap and it removes too easily. I can live with that for the money I saved.. Yes, the BIG name test equipment is better by far and is what I have used all my life, but for home or small business this equipment needs a look. Rigol and Siglent are two new names on my bench, to go with TEK, Fluke and Agilent, Remember they are made in China too. ;) Hope this helps.

I noticed some of the online reviews complained about the time it would take the meter to "settle", I don't really notice that. It does take a couple of cycles to set on a value but not a lot more than other meters I have used. For a bench meter, after starting with a VTVM (tube, as a kid in the 60s), this is by far the best I have ever worked with and for hobby electronics and casual design it is more than adequate. The display is easy to read and nicely setup. The power up sequence is slow for my taste, but it is computer, everything seems to take a while. Probably has Android or some variation of Linux underneath. Can't really make a comparison with similar brands in this price point, but I like what I bought.

This meter worked great for 3-months, then it stopped working all together. When the meter is turned on, the display shows the Siglent logo and nothing else. I've written two emails to Amazon to explain the problem and to arrange having the defective meter replaced or repaired, and they have not yet responded. I believe this meter is supposed to have a 1 year warranty so my next step is to contact Siglent Technologies customer service. I'll update the review after I give Siglent a chance to address the problem, however I am not satisfied with the lack of response from Amazon.

Excellent multimeter - precise readings and easy to use. Very satisfied with my purchase.

Works great. Only one issue with the upgraded firmware version. 1.01.01.20R2. If you try to save any data. The whole os will freeze up most of the time. I called siglent. I spoke with Jason. He was able to recreate the issue after he upgraded the firmware on his. And he started what they call an RMA. So Siglent is going to work on the issue and put out a fix. The firmware version right before the update doesn’t have the issue. But it also doesn’t have the add ons and fixes the update has. Overall I am happy with my purchase