FNIRSI2C53T Upgraded Handheld Oscilloscope, 50MHz Bandwidth, 3IN1 Digital Oscilloscope Multimeter DDS Generator, 250MS/s Sampling Rate, 19999 Counts, Voltage, Current, Capacitor, Resistor, Diode Test

Good meter for standard troubleshooting. Not recommended for precision calibration use. All functions work as needed. O-scope is limited in adjustment but it does work. I was able to use it to see the 20-70ms pulse width signals from a breaktor module on a EV battery disconnect. Everything else I have used it for has been basic and it works as needed. The battery holds up well so far. Did not like to use this meter at 1st but has become my go to meter as I get more familiar with its abilities. I would recommend this for advanced or advancing electrical users. Not ideal for beginners as you need an advanced understanding of electricity to understand the settings needed to get desired results. The unit has a nice auto feature to help with this but I find the auto readings are not always what I am after. The manual settings can get you dialed in. If you need advanced readings for troubleshooting then this meter will most likely get you what you need. If you don’t need the advanced readings then get a simple meter.

Very well packaged, the features of this scope rival high end scopes costing at least four times higher. Light weight (300 grams), CAT III Cat iV rated (600-1000), Scope AC - DC coupling, probes (standard BNC [2 probes] 1X - 10X switch) and meter leads included (eight math functions, FFT, persistence mode, 0-400 volt), Function Generator (13 wave forms), Multi-meter (four to six hour battery life, wave-form save and export, constructed from ABS with rubberise shock bumpers and grips. Measured frequencies from micro-controllers and voltage levels (4.5 digit display 20000 count True RMS) and it performed well within specifications. If you perform field service tasks, this is a must in the tool pouch. The manual is fair, but adequate to get you going.

Pros: Very functional and good value.Cons: Interface is a bit clunky and battery charge doesn't last too long.

Used mostly for the function generator which is a nice feature to have. Had no issues navigating the menus and configuring it. The quality of the unit is par with a student calculator so I would not choose this brand for field use; for that I would go with the more robust case on my HANMATEK hand scope.

The media could not be loaded. So far the scope seams to barely function. Adjustments to the horizontal often cause the device to restart.Use of the AUTO button often freezes the GUI and you must wait for the battery to die before being able to use the device again.The function generator has a lot of problems. changes to the frequency are not always applied until stopping and starting the finction generators repeatedly. Output frequency doesnt match what is entered.Use of the FFT function does produce a spectrum, but you can not enlarge it, apply markers, or get any reference points, which makes it useless. Thos should be a seperate display like the dmm and oscilloscope.In short, the firmware is not yet ready for market.Have reached out to the manufacturer through amazon and their website. Have yet to receive response.Frequency measurements are much more than 5% off for example setting the frequency to 5hz produces a 20hz signalFirmware v1.0.3Edit: the manufacturer contacted me and indirectly asked me to recalibrate the device. Their english is not very good so there is a language barrier. This has fixed a lot of the issues with the auto button freezing the device. And I believe it has reduced the number of times the device randomly restarts.Edit:After comparing reading to my fluke87 i started searching for their tolerance list,DC voltage +-(.05%+3)This is a funny way to say +-(3.05%) which is about what I saw.Not going to test the rest, sending it back today.Its good for the price, but after your first year of EE courses, you will have out grown this meter.They offered a full refund very quickly.

For my use around my home projects.

This could be a great instrument. It is very light weight and works well as a multimeter and signal generator. The scope works well too, but it has a totally non-intuitive user interface. Very difficult to figure out how to manually set sweep speed and deflection. I finally figured it out and it worked well, but I fear that the next time I use it I will have forgotten. The user manual and the manufacturers website are no help as they simply repeat the same unhelpful information.Pity really. With a better user interface it would be worth 5 stars.

Perfecto y muy a tiempo llego justo en el momento que me anunciaron fue una excelente compra maravillosa muy recomendado