Can you use it to measure air mass? Like kg / hour? And does it compensate for air temperature and air pressure?

It measures air velocity, period. Does not compensate for pressure or temperature. Does not measure air mass flow directly.

Can it calculate or convert to Feet per minute?

Here are the specs you are looking for: Measuring range: 0 to 6,000 fpm Accuracy: ±(20 fpm +5 % of m.v.) (0 to 394 fpm) / ±(59 fpm +5 % of m.v.) (394 to +3,000 fpm) Resolution: 1.97 fpm Volume flow: (cfm) 0 to 99,999 cfm (Resolution: 0.1 cfm)

Can you use it to measure the delta?

There's a trendline function that can keep track of changing temp over time.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

testo 405i Anemometer Handheld for Air Celocity, In-Duct Airflow and Temperature – CFM Meter with Extendable up to 15" Telescopic Shaft - Wind Meter with Bluetooth and App Operation

Product ID: 25479456

Details

Brand
Testo
Item Weight
0.23 kg
Item dimensions L x W x H
7.87 x 1.18 x
Material
Metal Plastic
Style
Wireless Smart

📏15" telescopic shaft for hard-to-reach airflow

📶Bluetooth 4.0 wireless smart app connectivity

🌡️Accurate temp range -4° to 140°F ±0.9°F

924.68 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Description

🌬️ Elevate your airflow game with testo 405i — precision meets portability in your palm!

COMPACT YET RUGGED - Lightweight and impact-resistant design ensures durability and portability for demanding fieldwork.
DATA DRIVEN DECISIONS - Smart Probe App transforms raw data into clear graphs and custom reports, empowering professional-grade insights.
REACH WHERE OTHERS CANT - Extendable 15-inch telescopic shaft effortlessly accesses tight ducts and vents for comprehensive airflow analysis.
PRECISION IN EVERY BREATH - Hot-wire sensor delivers ultra-accurate airflow and temperature readings, eliminating guesswork in HVAC diagnostics.
WIRELESS WORKFLOW FREEDOM - Bluetooth-enabled smart probe syncs with your smartphone for remote monitoring and instant data logging on the go.

The testo 405i is a professional-grade handheld hot-wire anemometer designed for precise measurement of air velocity, temperature, and volume flow in HVAC systems. Featuring a 15-inch extendable telescopic shaft, Bluetooth 4.0 connectivity, and compatibility with the Smart Probe App, it enables remote readings, data logging, and custom reporting. Lightweight and rugged, it’s optimized for tight ductwork and professional inspections, making it an indispensable tool for HVAC technicians seeking accuracy and efficiency.

Specifications

ASIN	B018VO5GI2
Best Sellers Rank	#34,306 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Anemometers
Brand Name	Testo
Customer Reviews	4.5 4.5 out of 5 stars (633)
Global Trade Identification Number	04029547014260
Included Components	testo 405i hot-wire anemometer, 3 AAA batteries and certificate of conformity
Item Dimensions	7.87 x 1.18 x 1.61 inches
Item Weight	0.23 kg
Manufacturer	Testo
Material Type	Metal, Plastic
Measurement Accuracy	±0.9 °F / ±0.5 °C
Model	405i
Number of Items	1
Number of Packs	1
Output Type	Digital
Part Number	0560 1405
Response Time	5 seconds
Sensing Distance	15 inches
Specific Uses For Product	HVAC inspections, air conditioning servicing, industrial and professional settings, confined spaces
Style Name	Wireless Smart Probe
Unit Count	1 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

924.68 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews