Really made it easy to balance airflow in my house. Highly recommended.

When we opened the box, the batteries were coroded and leaking. Apart from that the product seems OK.

Does the job, but probably a bit over priced

はじめ測定ファンのフロー方向がわからずにいましたが、どちらからでも風速が測定できふ、ファン部に内蔵された磁気センサーで方角も測定とロギングができるという本格的な風速計です。また、USB経由でPCと接続ができますが、記録データのほかにリアルタイムでデータ連携も可能です。簡易的な風速計は数多くでていますが、温度や方角、風速のmax/minに加えてロギングまでができる風速計がこんなリーズナブルな価格で買えるのはよい時代になったとつくづく思いました。簡易的な風速計では満足できない方にお勧めいたします。コスパがいいです。

I have a couple other Wintact measurement devices and have been impressed by the overall quality of them for the features and cost and so far I'm finding this anemometer doesn't break with the trend. The device itself is all plastic and not particularly special in any way in terms of sturdiness but overall feels solid enough and not outright cheap. It doesn't have a rechargeable battery and takes four AAA batteries (included), and at the end of the day I actually prefer this to a lithium battery built in when it comes to relatively infrequently used tools as this means it'll always be ready to go and work when you need it as long as you have some standard batteries around. The screen is huge and easy to read, and there is a bright backlight (you manually turn the backlight on and off by short pressing the power button). It shows a huge amount of data right on the unit all at once without having to constantly switch modes or anything.You can definitely find a basic anemometer for a lot less than this but this has a few key useful features that differentiate it. The first thing is that it also measures temperature and humidity though I have some reservations about that I'll get to. Second thing is it actually can measure wind angle. Third thing is that you can connect it to a PC and monitor in real time or analyze recorded data in the software.Temperature and humidity are "okay" in terms of accuracy. I found that the temperature generally reads about 1C higher than actual, and the humidistat measures a pretty big 15% or so higher than actual. I've compared these to the values in my house measured by my HVAC equipment at the place where it measures them, which I've previously determined are pretty much spot on. You may want to take the RH measurement of this device with a grain of salt.The wind angle works with what appears to be some kind of digital compass or gyroscope built into the hand held "fan" portion of the unit and shows in real time the angle you have it pointing (assuming you have the stick pointing straight up) in terms of degrees of rotation and it seems to be accurate and responsive out of the box.Wind speed and flow/quantity seems accurate though I have no other device to compare the measurements against. One thing that I noticed was that the CFM measurement is listed in the specs as going from 0 but there is enough resistance in the fan that measures it that I was unable to get the fan spinning to take any measurement smaller than around 40 cfm. If you need to make measurements of very small amounts of flow under about 50 cfm this may not be for you.The software is kind of clumsy and clunky, and reminds me of Windows software that might have been common in design 10-15 years ago. While it may not be pretty or particularly intuitive, it does work and will do the job. It can be used to show real time data from the device or historical stored data and does have some basic charting built in. Now the saving grace of the software even if it doesn't do everything you need for analysis is that it can export the data in standardized format for import into whatever more powerful data analysis software you're more comfortable with using.