{"id":1722,"date":"2021-04-18T20:07:51","date_gmt":"2021-04-18T18:07:51","guid":{"rendered":"https:\/\/lab.fawno.com\/?p=1722"},"modified":"2022-08-19T12:21:52","modified_gmt":"2022-08-19T10:21:52","slug":"","status":"publish","type":"post","link":"https:\/\/lab.fawno.org.es\/en\/2021\/04\/18\/analisis-multimetro-zoyi-zt-300ab\/","title":{"rendered":"Review: Zoyi ZT-300AB Multimeter","raw":"Review: Zoyi ZT-300AB Multimeter"},"content":{"rendered":"\n

Looking for cheap multimeters I found the Zoyi ZT-300AB<\/a>, for about \u20ac20 we have a more than interesting device that includes a Bluetooth interface to take readings through a tablet or mobile. Zotek Instruments has provided me with a unit for your analysis.<\/a><\/p>\n\n\n\n

You can read this post in spanish<\/a>.<\/p>\n\n\n\n

The arrival<\/h1>\n\n\n\n

The multimeter comes in a smooth cardboard box that is fully screen printed. On the front there is a photo of the multimeter and a mark that indicates a one year warranty (is it legal in Europe to limit the warranty to one year?). Not much more information comes, only a sticker in one corner informs us that it is a multimeter (DMM, for its acronym in English) with bluetooth and a QR code to access the download of the application.<\/p>\n\n\n\n

The device comes with its corresponding test leads, temperature probe, instructions (in English) and a soft-touch gray carrying bag with a multimeter silkscreen print.<\/p>\n\n\n\n

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Unboxing the Zoyi ZT-300AB<\/figcaption><\/div>\n\n\n\n

The device<\/h1>\n\n\n\n

The multimeter has a size that we could classify as small, 81mm wide, 161mm high and 39mm deep. The ABS<\/a>-type plastic of the housing seems sufficiently resistant to impacts and small drops. In the hand it is comfortable, being barely larger than the palm of my hand. The 250 gr of weight denotes the reduced size of its measurements.<\/p>\n\n\n\n

On the front, in addition to the screen, we have six buttons (four rectangular and two round), the rotary selector and the input terminals. The power on is carried out by means of the rotary selector, a system that I like. The buttons are made of a rubber that is pleasant to the touch and easy to use, even though they are small in size. Everything about this device is small in size, which makes parts like the rotary selector seem difficult to use, yet maintains adequate ease of use and grip.<\/p>\n\n\n\n

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Zoyi ZT-300AB Multimeter<\/figcaption><\/div>\n\n\n\n

At the back we find the relevant folding support to put the multimeter upright. In this support we find a sticker with the QR code to download the mobile application. Lifting the folding support we find the compartment for the batteries, two of type AA. To open the battery compartment you have to unscrew the relevant screw, but we are surprised that with the lid of said compartment we also lift the folding support. This gives us full access to the batteries, replacing the lid and the folding support is not complicated. I found it to be an ingenious and practical solution since, due to the size of the multimeter, I was afraid of difficult access to the batteries and with this solution changing the batteries is very easy.<\/p>\n\n\n\n

The test leads are of acceptable quality, they have a snap-on cap that covers the entire tip except for a couple of millimeters for when we measure with voltages of more than 30 V. The tips are small, although the connector is standard and Allows you to use any other normal size tip. The metal tip of the test leads are also of standard diameter, allowing us to use normal accessories if we have them.<\/p>\n\n\n\n

The specifications<\/h1>\n\n\n\n

The first thing we need to know about a multimeter today is what category of overvoltages the device is certified for, in this case it is CAT-III 600 V \/ CAT-II 1000 V, which makes it suitable for general electricity and electronics.<\/p>\n\n\n\n

It is an automatic range device and, how could it be otherwise, we have the three fundamental measurements: AC \/ DC voltage, AC \/ DC current and resistance \/ continuity. We also have: diode test, frequency, duty cycle, temperature and capacitance.<\/p>\n\n\n\n

Other functions that we have are: backlit display, value hold, relative value, maximum value and minimum value.<\/p>\n\n\n\n

In general we can speak of a multimeter of good precision with a resolution better than \u00b1 (1.5% + 3) in the most important scales. Also, the multimeter’s counter is 6000 counts, which is very good.<\/p>\n\n\n\n

Their ranges and sensitivity for voltage and current measurements are the usual ones in multimeters for electronics. It does not make much sense that it describes all the ranges, resolutions and precision of the scales, you can consult it more comfortably in the summary table of the manual<\/a>.<\/p>\n\n\n\n

The functions<\/h1>\n\n\n\n

The list of available functions is as follows:<\/p>\n\n\n\n