Can this be used to measure air from a floor air vent in an A/C system

If you mean the air flow (speed), then the answer is YES. If you mean the temperature of the air, then the answer is NO (because it is not accurate when it comes to temperature)

what is the purpose of the USB cord?

HOLDPEAK told me that the USB port on the back of the HP-866B-APP is only to provide power to the unit if the batteries are dead or missing, but not for data transfer.

does this have a screw on the bottom to attach to the tripod

Dear kcarter,Hello.I am Cindy from Holdpeak sales support.Yes!Our 866B anemometer comes with a carrying strap which screws into the bottom or you could mount it in a tripod.I hope my answer will be helpful!

I received mine today. Is there any way to adjust the contrast of the display? I can't hardly read mine.

No contrast adjustment that I know of but there is a back light. But there is a back light that might help. Check your battery. It is a bit sensitive to your viewing angle so hold it directly in line with your eyes. But I repeat, check your battery.

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HoldPeak Handheld Anemometer Bluetooth, Digital Wind Speed Gauge Meter, Air Flow Velocity Temperature CFM Measuring Device for HVAC Outdoor Sailing Shooting Golf, 866B-APP

HoldPeak Handheld Anemometer Bluetooth, Digital Wind Speed Gauge Meter, Air Flow Velocity Temperature CFM Measuring Device for HVAC Outdoor Sailing Shooting Golf, 866B-APP

Product ID: 35206631

Details

Brand
H HOLDPEAK
Item Weight
7.04 ounces
Item dimensions L x W x H
6.5 x 3.35 x
Material
Acrylonitrile
Number of Items
1

📊Multi-unit & max/min/avg data tracking

📶Bluetooth remote monitoring

🌬️8-vane ultra-sensitive wind detection

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Description

🌬️ Stay ahead of the breeze — measure smarter, not harder!

PRECISION WIND METRICS - Dual temperature sensors and 8 vanes deliver highly accurate wind speed, chill, and temperature readings.
HANDS FREE SECURE USE - Tripod mount and hand strap ensure stability and safety during outdoor adventures or technical tasks.
VERSATILE MEASUREMENT UNITS - Switch effortlessly between m/s, km/h, ft/min, knots, mph, ℃, and ℉ to suit any professional need.
ALL IN ONE OUTDOOR HVAC TOOL - Perfect for drone flying, sailing, HVAC airflow calculations, and more—your go-to for precise environmental insights.
SEAMLESS BLUETOOTH CONNECTIVITY - Monitor real-time & historical wind data remotely via intuitive mobile app.

The HP-866B-APP is a professional-grade digital anemometer featuring Bluetooth-enabled remote monitoring through a dedicated app, 8 precision vanes with dual temperature sensors for accurate wind speed and temperature readings, and versatile unit options. Designed with a tripod hole and hand strap for secure, hands-free operation, it excels in both outdoor activities and HVAC airflow measurements, making it an indispensable tool for professionals and enthusiasts alike.

Specifications

ASIN	B01LWU5MM0
Best Sellers Rank	#8,584 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2 in Wind Speed Gauges
Brand Name	H HOLDPEAK
Customer Reviews	4.1 4.1 out of 5 stars (214)
Included Components	anemometer, screwdriver, battery, manual, lanyard, protective case
Item Dimensions	6.5 x 3.35 x 1.5 inches
Item Weight	7.04 ounces
Manufacturer	H HOLDPEAK
Material Type	Acrylonitrile Butadiene Styrene (ABS)
Model	JPHP-866B-APP
Part Number	JPHP-866B-APP
Warranty Description	1 year

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S$93

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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