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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HP-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 modes

📶Bluetooth remote monitoring

🌬️8-vane ultra-sensitive wind detection

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HK$647

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In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
H HOLDPEAK
Item Weight
7.04 ounces
Item dimensions L x W x H
6.5 x 3.35 x

Description

🌪️ Master the wind, measure like a pro — don’t get left behind!

ALL TERRAIN READY - From sailing and golf to HVAC airflow balancing, this rugged ABS device is your go-to for precise environmental measurement.
HANDS FREE SECURE USE - Built-in tripod mount and hand strap keep your device steady and safe during outdoor adventures or HVAC tasks.
SEAMLESS BLUETOOTH SYNC - Monitor real-time & historical wind data remotely via app—stay connected wherever you are.
VERSATILE UNIT SWITCHING - Effortlessly toggle between m/s, km/h, mph, knots, ft/min & °C/°F to suit any project or preference.
PRECISION WIND TEMP SENSING - 8 vanes + dual temp sensors deliver highly accurate wind speed, chill, and temperature readings for pro-grade insights.

The HoldPeak 866B Bluetooth Handheld Anemometer is a professional-grade digital wind speed and temperature meter featuring 8 ultra-sensitive vanes, dual temperature sensors, and multi-unit display options. With Bluetooth app connectivity, tripod compatibility, and a durable ABS build, it’s designed for precise airflow and environmental monitoring across HVAC, outdoor sports, and industrial applications.

Specifications

ASIN	B01LWU5MM0
Best Sellers Rank	#10,381 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2 in Wind Speed Gauges
Brand	H HOLDPEAK
Brand Name	H HOLDPEAK
Customer Reviews	4.1 out of 5 stars 214 Reviews
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
Item dimensions L x W x H	6.5 x 3.35 x 1.5 inches
Manufacturer	H HOLDPEAK
Material	Acrylonitrile Butadiene Styrene (ABS)
Material Type	Acrylonitrile Butadiene Styrene (ABS)
Model	JPHP-866B-APP
Number of Items	1
Part Number	JPHP-866B-APP
Warranty Description	1 year

Reviews

S**R

12.03.2026

J**T

14.04.2026

T**D

4.12.2018

D**R

18.03.2019

D**E

1.05.2019

L**.

13.03.2025

C**K

15.07.2024

F**B

24.06.2021

M**I

19.06.2023

C**N

26.10.2021

A**ー

6.02.2021

引**奴

1.09.2020

M**9

20.09.2023

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HK$647

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered 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 Hong Kong.

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