HANMATEKHandheld Digital Oscilloscope 50Mhz Bandwidth with 2 Channels HO52 3.5" TFT Mini Oscilloscope, 2 in 1 Oscilloscope and Multimeter, Backlit Screen, Auto-Calibration Function, Memory Function

This is a useful little electronic tool and has most of the settings available in professional equipment although the process of adjusting them is not intuitive. I did have a question about the screen turning off after 30 seconds, which the manufacturer answered promptly. The setting for this is called BL time and can be disabled.So far I am enjoying this very low cost, highly portable device.

This compact mini oscilloscope was simple to use, it's many functions like adjusting the gains in my car amplifiers were accurate .. providing good battery life for a compact unit with a nice size display.. worth the value as compared to 100's even thousands on an oscilloscope.

Have been using Scopes many years....Since this scope does not have controls marked as a standard analog scope ,you have to learn what the function buttons mean in correlation with an analog scope. Some things you cannot control, but in the auto mode they are workable. So far I have had a learning curve in regards to Buttons and what they do when and where. So far this Scope seems OK and is compact and well built. I am enjoying the learning cure as far as buttons and functions. For the price this little GEM Comes with hi quality probes and accessories. It's a Great buy and you get quite a bit of power in the little package.Just wish the controls were the same as an analog scope for ease of operation. But like an old dog ..I can learn new tricks.

I gave it an overall score of 4, because of the learning curve. Other than that, it has a 5 star.Accuracy....Well, I turned the generator back onto the scope itself and did some measuring. It jumpedall over the correct frequency. I was hoping a little more stability in reading the frequency when it was supposed to be fairly close. I tried a regular house hold frequency, it was Plus or minus 2hz. Jumped all around 60hz.Generator worked, Scope worked, Multi-meter worked. I couldn't manually set the "scale" on the multi-meter. It only seemed automatic. At the same time, maybe I just couldn't find the manual setting in the Multi-meter mode. (Part of that learning curve if manual mode exists).Ease of use, I gave a a low value because of the learning curve. I would finally figure it out in about 1 hour, but the next day i would have to re-figure it out again. It seemed they tried to make it like the fluke 123, but it just isn't as easy to operate as the 123. I believe after the learning curve, it will be a fantastic meter for the money. I think you will have a meter well worth the money you paid.Though I gave it a low Ease of use, do not be discouraged by the value. It is actually quite easy to use, just a little cumbersome to learn how the meter works in the first place. Once you learn the meter, ease of use is nice. I would recommend this meter to other people. I suggest that the people who purchase this meter be familiar with both Oscilloscopes, Multi meters, and Generators. If you have used flukes like I have most of your life, it will be frustrating learning this meter at times. But hang in there, these meter does a fine job.The manual is basically worthless....But no problem for those who have worked with scopes, multi-meters, and generators before.

This review is based on several weeks of use, so no long term conclusions.The good parts.I needed a portable "floating", as in isolated ground, scope for poking around on the mains side of power supplies. HO52 fits the bill. It seems to do the advertised 50MHz and has the multimeter side isolated from scope side, as in, multimeter ground is not connected to scope ground. Probe BNC connectors are shrouded and 1KHZ contacts have rubber cover. So from visible safety perspective it looks good.The interface (buttons) is laid out reasonably well, so it is possible to operate with one hand - I can hold the unit in my left and reach all the buttons with my thumb.Battery life seems to be around 5 hours, but I did not try to run continuously for 5 hours.Multimeter readings seem to be within reason from Brymen BM869, so no complaints. Although multimeter is not my reason for buying O52.Not so great parts.Autoset function works fine down to 20mV-18mV signal. As long as you do not expect benchtop performance out of the portable unit, it is OK. Frequency measurement starts working at around the same signal level - 20mV~18mV. So this could be better.Masurements are very basic, so are the triggers. No channel math.I did not find a way to adjust vertical or horizontal settings smoothly (uncal in Tektronix speak, Vernier in Rigol's) - it is always discrete jumps. So if you are trying to measure rise time, there is a bit guessing game where to place your cursors (for example at 10% and 90% of PK-PK).Conclusion.Would I buy it again for a portable scope with a "floating" ground? Yes, no doubt.Would I buy it as a starter scope if I did not have a benchtop unit already? No, not really. It would be better to save and buy a 1GS/s 100MHz desktop unit with better sensitivity and features. HO52 is not a replacement for benchtop unit.

Probably one of the most fun toys I've gotten myself in awhile. Love to tinker with electronic equipment and this meter/scope was a great performer.

Seems to work as advertised (still have not used in an actual application)

Battery life is not something I considered since every multi meter I have had just had batteries that lasted forever due to the simple functionality. With the fancy backlit display, it sucks up so much battery that I feel like I am recharging it every week. Just annoying to have to recharge a tool you use regularly. Pobably great if you really need a portable oscope most of the time, but if you are mostly going to be using the DMM part, just get a simpler one so you dont have to recharge constantly. at least it is rechargeable so you dont have to change the batteries. That would be extremely inconvenient. Also at least it is USB C so same cable i just have around