BTMETER BT-100APP Anemometer w/Wireless Bluetooth, Digital Handheld Wind Speed Meter for Wind Chill, Air Velocity, Temperature, Vane Anemometer Gauge

First off, Amazon must have this unit stocked locally; it came in a single work day. Second, it comes completely as described: hand held/tri-pod mountable unit, 2xAA batteries, small driver tool for battery cover, attachable lanyard, USB cord (not sure why needed), manual, and carry case. the BT-100APP has instructions to UR scan with smartphone for app, or search your preferred play store for "intelligent anemometer"; once downloaded a refresh on your Bluetooth will pair and you're "almost" ready to measure your temp and wind speed.. the manual and box, and online does not mention that you might have to get into your phone settings; go to the wind app, and set the option to download/save your data prior to collecting it... other than that, the unit operates as described, and I even had another temp gauge, AND another wind device nearby, and it is even more accurate and sensitive.the temp is within 1/10th of an AcuRite weather station, and old school mercury gauge; the rotary vanes are more than traditional anemometers, and the low friction bearings are activated by lower wind speeds.I've left it out on a tri-pod overnight and the Bluetooth to the phone works thru windows/walls to 30plus feet.after powering down unit, data on phone can be saved as .xls (excel) or .txt (text) and either emailed, or downloaded to laptop or tower. I own more than four different type/brands of wind measuring devices (I use them to dictate where to install wind turbines on client's properties/buildings), and the BTMeter is by far the nicest, AND easiest to use, AND retrieve and save data; PLUS, one of the least expensive! great product. I will be buying more, and recommending to anyone needing to gauge air volume/speed. Hope this helps someone.

Bought this for shooting even though the stated Bluetooth range was 10 meters (33 feet). Bluetooth Class 2 is 2.5mW and conservatively rated at 33 feet. For my testing I paired to a Samsung Galaxy Tab A (SM-T280) tablet. It was a clear sunny morning, light wind, and away from any electrical noise sources. I set the anemometer up perpendicular to my shooting direction, near the target. You need to know the cross wind component to compensate for wind drift. Obviously I had a clear line of sight and started walking toward my shooting bench. After several trials, I always stayed connected at 150 feet (50 yards) and always dropped connection by 225 feet (75 yards). Each time I dropped connection I had to go back to the anemometer and power cycle it to re-establish the connection. The stated accuracy of +/- 5% is good enough for what I am doing, but I don't have a way of checking it. It would have been nice to display plus or minus for the air flow. There is an arrow on the top of the anemometer, I guess showing the direction of intended air flow, so you can read the display. In changing winds, you could end up compensating the wrong direction. For shooting, a ribbon will need to be near the anemometer to verify right or left wind bias. The vane spins opposite directions based on which side the air flows. I set up a fan to see if the anemometer would read the same regardless of air flow direction. Best I could tell, it does. The manual is OK, you can figure it out. A little more detail and a writer with more understanding of the English language would help. Overall, this is going to work great for my application.

The product is well made and functions as I expected. Two points though; battery cover was a pain to pry off even with the screws removed with the included screwdriver. I had to use a knife blade to get the battery cover off. Second point and puzzling to me, a usb cable is included and I figured out what it’s for, yet there’s nothing in the manual about the cable. I docked a star because this is a silly oversight that I hope they correct because as I indicated, the anemometer is working well in the limited time I’ve used it. It gives accurate wind readings and the thermometer gets to the right temperature after a few moments. Overall, solid product and good performance, just put a little bit of effort into the manual, please!

This is a very cool anemometer. I'll admit it is also my 1st. Purchased because I'm getting into drone flying and want to compare often inaccurate reported weather (via apps, etc) with what it's really like on the ground.Likes:- Easy to setup (turn on and good to go)- Easy to connect to your phone (no pairing or fiddling, just launch the app, wait a bit and it's connected)- I cannot comment on the accuracy having nothing to compare with additionally it's a bit directional so obviously when the wind changes direction it won't be as accurate at that point in time- I like the app, nice decently fast update - I'd say there's a 1 second delay or close between speed on device and speed in app- Not certain the temperature is accurate but it feels like it isWishes- Data retention in the device (of course other models do that so it's more my fault) but maybe if it did not lose all data when you moved from current to max to min then back to current. Every switch seems like it resets the data.- Wished it would continuously record data on the app vs just when I click on save- Wished I could change the place it saves (such as to Google Drive)- Wished the App would allow to specify a period for the graph to scale over seconds or minutes or moreUnsure what the usb port is for, maybe powering?