I bought it for €12.7, so I can measure the consumption of my computer and/or air conditioner. Testing it on the air conditioner, I see up to 770W at the start when it turns on, and then it stabilizes at 420W, dropping to 20W when it senses it doesn't need to work. This tells me it does its job perfectly.

I hope it will last in terms of durability, but for what I wanted it to do, it does it and more. And at this price, I will definitely buy more.

Good construction. I confirmed how little power LED bulbs actually consume... I have it connected to a floor lamp that stays on for many hours.

Very convenient, measures Watt, Volt, KWh (and € if you enter the price of KWh). It retains the measurement even if disconnected. I would like it to have better accuracy in consumption measurement, it shows 1 decimal (0.1 KWh). Overall, it is worth the money

It didn't even have time to work.

The device arrived ok, but the manual could be a bit better, because I still don't know how to use it. Maybe it is me though.

The measurements are accurate. Dehumidifier with a power of 520W on maximum operation and the meter recorded 520W.

It is a very good meter with a super easy menu, and the price of the kW is entered very easily, it couldn't be easier. As for the measurements, they are completely accurate; for example, an electric vacuum cleaner with a manufacturer’s rating of 850W measures 850, a steam cleaner rated at 1500W measures exactly 1500, and it has been checked. Generally, it measures correctly for all devices with the manufacturer’s ratings and with the corresponding fluctuations in consumption at various levels, like for example a fan or a dehumidifier. Also, something very important is that it detects the phantom loads from devices that consume electricity while they are turned off. Overall, you have a complete picture of anything that is using electricity, and this way you can adjust your consumption and save quite a bit of money on your electricity bill.

The screen is not easily visible from all angles. At outlets that are located at particularly high or very low points, one must look at it from a specific angle to be able to read the information.

Purchased to measure the consumption of the PC, in order to buy the appropriate UPS. Now knowing the consumption, I know which UPS to choose. I am satisfied with its use.

VFM the device, I remove one star for the deviation it has at the few watts and the lack of instructions in Greek. Very simple to use, with the mode button you change the indications from volt-watt-kwh but it's hard to register kwh/€ so you can see the cost, the good thing is that it doesn't reset when unplugged. Now for its reliability, time will tell but that's why there are warranties

It does what it says. It detects, for example, the changes in inverter air conditioners. Compared to an older one I had, the screen is more readable

Purchased today, 12/07/2024, and it works perfectly fine. I use it to monitor the consumption of my A/C. It is good and cheap, costing 11.40€. It accurately measures the consumption, showing voltage in Voltage, instantaneous consumption in Watt, total consumption in kWh, and depending on the electricity price you input, it displays the total cost. The package includes a manual in Spanish, German, Polish, and English.

It does what you want just fine. Satisfied now, but as for the accuracy of the measurements, you can never know 100/100, so what are we even discussing? However, you do get an idea of what burns calories and you get results.

It's awesome, I used it to see how much the air conditioning burns and it ultimately saved me money. I have recovered the cost maybe even from the first month of purchase!

I have had it here for 2 months in my computer socket. It shows both instant consumption and total consumption. I haven't set it up to show cost.

It seemed simple to use. I can't know for sure, but I have no reason to believe that it is not accurate

Very good for its price. The screen could have better clarity, but it does its job just fine.

I used it 2-3 times either to see the total consumption (kWh) or to see the W of a device in order to calculate what UPS I need. It gave me the information I needed. It has two negatives:
1. The screen is not easily readable.
2. The menu is a bit complicated (I wouldn't give it to someone unfamiliar to use without adjusting it myself to show what is needed).

Simple and user-friendly. I don't know about the accuracy of the measurements, but I didn't have any indication that it shows wrong numbers. What it shows seems logical to me.

So far, a very good purchase. and reliable in measurements. easy programming. Shows voltage measurement. Measurement of device operation Watt. and cost of consumption. and total range of KWH consumed. KWH price settings. I recommend it.

Today I started using it and after several hours I concluded that it does what it should. It measures in watts, in kWh as well, you can also input the kWh price and it shows you the consumption as well as the voltage measurement of your devices. The kWh measurement is great, but if you are looking for detailed and accurate measurements then you need to do something else and you have to spend more than 10€.

I would not recommend it. It measures in subdivisions of Kwh. If the device consumes 101 w or 199 w, the reading will be 0.1 Kwh. It is not accurate if you want to measure how much electricity your device has consumed up to a given moment. However, it does show the theoretically hourly consumption.