ZT-703S 50MHz 3-in-1 Digital Multimeter & Oscilloscope, High-Precision Voltage Meter, TFT Color Screen, 3400mAh Battery

Really happy with this meter. Would but again. Osiloscope isnt perfect but for the price can't complain works great for working on my electronics

I've always wanted an oscilloscope but could never afford one. Now I know there are oscilloscopes and there are oscilloscopes, but at this price, it has been working for me. I've been using it to fix power supplies and clock radios. I checked a number of reviews and decided on this one. Glad I got it.

I can’t believe they sell this at this price point. It’s great. Everything I’ve tried works well. It’s as accurate as I need for what I’ve tested. Is it as accurate as my fluke down to 4 decimal places? Not sure. But it seems pretty good for hobby use. I’m impressed and the display looks great.

Amazing scope for the price, comes with everything features needed to troubleshoot low frequency applications, with decent battery life to boot.

It is a very smart device.

The media could not be loaded. I owed it about 10 months (new purchase June 2024). Unit no longer stays off, but turns itself back on. Problem was probably due to static electricity (heard snap of static when I went to disconnect it from charger, but no test leads connected).Before breaking, I would have given unit four stars.Some bad things:A) Occasionally the two scope channels did not appear synchronized with respect to time. Not a problem with repeating signals, but sometimes just flat wrong when viewing output from a microcontroller or similar. I occasionally had to get my desktop scope out to verify or reject the Zoyi readings.B) Lots of software quirks. Displaying an analog meter of 0 to 25v for the diode tests is misleading (since unit only puts about 3v into diode).C) There are two methods to format the internal image storage card, but the format option from the menu requires no confirmation before erasing all data.D) For a new unit, you need to format the internal storage card. Formatting card is not mentioned in manual, and unit will simply refuse to save an image. I almost returned unit in the first month because I thought it was broken.E) Images are saved in BMP format, which some computer image software no longer supports.However, the unit had become my main meter and scope for several reasons:1) On battery power, it is safe to measure and diagnosed equipment connected to 120v utility line power.2) Auto range function was fast enough not to be irritating, although I still locked the range fairly often.In summary, I bought another scope of a different brand because the handheld scopes are useful. However, I wasn't that upset about the Zoyi breaking due to its quirks.

Came with two 60Mhz probes (not shown). Unexpectedly, right after I received the O-scope, I had a problem in a consumer electronics device and used the capacitance checker to find a bad metalized film capacitor that had deteriorated by 1/2 and measured just 500 nfd instead of the correct 1,000 nfd (1 ufd). I like the meter probes because they're very sharp and cut through oxidation and they have shrouds to protect the points when not using them. I put this O-scope in my fabric tool bag and it fits perfectly where my old multimeter meter went.

This is a terrible multimeter! I purchased this for my circuit analysis class and blew the mA fuse (probably a rookie mistake but I’m not the only one in my class that blew it) so while I was looking for replacement fuses I panicked and bought another one to complete my lab on time. The new one worked for a bit but then the screen died! No, I did not drop it. My classmates have all run in to similar problems with this multimeter and my professor has directed our university’s supply manager to not include this multimeter for future classes!