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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Bluetooth Anemometer

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 modes

📶Bluetooth remote monitoring

🌬️8-vane ultra-sensitive wind detection

P2373

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Sold byAmazon BotswanaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Stay ahead of the breeze — measure, monitor, master!

VERSATILE MEASUREMENT UNITS - Switch effortlessly between m/s, km/h, ft/min, knots, mph, ℃, and ℉ to suit any professional need.
ALL TERRAIN APPLICATION READY - Perfect for HVAC diagnostics, sailing, golf, drone flying, and more—empowering your outdoor and professional pursuits.
HANDS FREE SECURE OPERATION - Tripod mount and hand strap ensure stability and safety during dynamic outdoor activities.
SEAMLESS BLUETOOTH CONNECTIVITY - Monitor real-time and historical wind data remotely via intuitive app integration.
PRECISION WIND TEMPERATURE SENSING - Dual temperature sensors and 8 vanes deliver highly accurate wind speed, chill, and airflow measurements.

The HoldPeak 866B-APP is a professional-grade handheld anemometer featuring Bluetooth connectivity for remote monitoring, ultra-sensitive 8-vane wind speed detection, and dual temperature sensors. It supports multiple units of measurement and includes practical features like a tripod mount and hand strap, making it ideal for HVAC professionals, outdoor enthusiasts, and sports aficionados seeking precise airflow and temperature data on the go.

Specifications

ASIN	B01LWU5MM0
Best Sellers Rank	#11,824 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2 in Wind Speed Gauges
Brand Name	H HOLDPEAK
Customer Reviews	4.2 4.2 out of 5 stars (220)
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
Number of Items	1
Part Number	JPHP-866B-APP
Unit Count	1 Count
Warranty Description	1 year

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P2373

Duties & taxes included

In stock

Sold byAmazon BotswanaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Botswana.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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