2 in 1 Handheld Oscilloscope Transistor Tester 2.4" Colorful Display PWM Output for NPN/PNP Diode Capacitor Resistor Transistor etc.

So much packed into such a small package and such a good price.overall measurements and outputs are close enough for hobbyists, but if you want accurate readings you better off grabbing a decimated testing tool for each function.it is portable and convenient. all in all, it is pretty good, as long as you do not expect more of it than it can deliver.component tester:The component tester is basically the same as those mega328 component testers. with a higher testing voltage range for zeners.. The component tester works well for the most part, but don't expect the measurements to be as good or comprehensive as dedicated measuring tools. though it will certainly get you in the ballpark, which is good enough for most hobbyists. capacitance and resistance values, in example, were fairly close, but not as accurate as gear costing a lot more. still a handy tool indeed..the oscilloscope worked well, though, i found the menuing system a bit frustrating to use. you could get your measurements done and the auto function seems to rok well. the 3db point was a bit over 200mhz, which fits the spec. but also is going to keep in mind that your readings will be under the actual values as the frequency rises.PWM output seemed to work well, you can see it looped back into the oscilloscope in the picturethe ir remote test feature is interesting, though, not sure what id use it for.i like that it is rechargeable via usbc and that it has a leg so it can be set at an angle.i am concerned about the adapter used for the oscilloscope probe, it feels like one good accidental hot when it's inserted into the unit and it breaks things.default is a 1 min power down which i found annoying, but you can disable thatthe screen is plenty bright and easy to read even with these old eyes.i hope this was helpful

Will you get scientific level accuracy out of this? No, but what you do get for the price is great for the hobbyist to use for basic troubleshooting, circuit analysis, testing, etc. Its very portable and comes with a number of test leads. The menu / navigation is rather confusing and take some getting used to, but once you get the hang of it, it's not too hard to use. I keep this at my little work bench where I solder stuff, next to my multimeter and other electrical stuff. Handy little unit with good battery life.