---
product_id: 25479456
title: "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"
brand: "testo"
price: "188701CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Testo"
url: https://www.desertcart.sn/products/25479456-405i-anemometer-handheld-for-air-celocity-in-duct-airflow-temperature
store_origin: SN
region: Senegal
---

# 15" telescopic shaft for tight spaces Bluetooth 4.0 wireless connectivity Accurate temp range -4° to 140°F 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

**Brand:** testo
**Price:** 188701CFA
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 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 by testo
- **How much does it cost?** 188701CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/25479456-405i-anemometer-handheld-for-air-celocity-in-duct-airflow-temperature)

## Best For

- testo enthusiasts

## Why This Product

- Trusted testo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Lightweight and rugged design fits in your toolkit, built to withstand the demands of professional HVAC pros.
- • **Data-Driven Decisions:** Automatically calculates volume flow and stores data for custom reports—ditch manual errors forever.
- • **Reach Where Others Can't:** Extendable 15-inch telescopic shaft effortlessly accesses hard-to-reach ducts and vents.
- • **Precision in Every Breath:** Hot-wire sensor delivers ultra-accurate airflow, velocity, and temperature readings with ±0.5°C accuracy.
- • **Seamless Smart Integration:** Bluetooth-enabled for instant connection to your smartphone with the intuitive Smart Probe App.

## Overview

The testo 405i is a compact, handheld hot-wire anemometer designed for professional HVAC and air quality inspections. Featuring a 15-inch extendable telescopic shaft, Bluetooth 4.0 connectivity, and a temperature range from -4° to 140°F, it provides precise airflow, velocity, and temperature measurements. Paired with the Smart Probe App, it enables remote readings, automatic volume flow calculations, and custom report generation, making it an indispensable tool for efficient, error-free duct and ventilation analysis.

## Description

testo 405i Digital Anemometer handheld for measuring airflow, air velocity, and temperature on air conditioning systems Measure air velocity, temperature, and volume flow with just one instrument - the durable testo 405i temperature probe provides reliable measurements and, if combined with the smart probe app, allows remote measurement readings. With its automatic calculations, the app erases the need for error-prone manual calculations. Merely download the testo smart probe app, take advantage of user-friendly readings and create custom reports that are quickly saved and retrieved. The telescopic shaft is extendable and rotatable, making otherwise hardly accessible in-duct measurements of airflow fast and easy. The rugged housing protects the device from impact, making it extremely durable. Technical Data 405i: Temperature measuring range: -4° to 140 °F / -20 to +60 ° Temperature measurement accuracy: +-0.9 °F / +-0.5 °C Velocity measuring range: 0 to 5906 fpm / 0 to 30 m/s Velocity measurement accuracy: +-(19.7 fpm + 5 % of mv) (0 to 394 fpm) / +-(0.1 m/s + 5 % of mv) (0 to 2 m/s) / +-(59.1 fpm + 5 % of mv) (394 to 2953 fpm) / +-(0.3 m/s + 5 % of mv) (2 to 15 m/s) Dimensions: 8 x 1 x 2 in. / 200 x 30 x 41 mm Weight: 4.22 oz. / 119.6 g System Requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0 Scope of Delivery: testo 405i Bluetooth hot-wire anemometer, including 3 AAA batteries, certificate of calibration

Review: Dust Collection Balancing Game Changer - I'm on my second one of these. I start up industrial dust collection systems and traditionally use a pitot tube and Dwyer digital manometer. I did several duct balancing trips where I used this and the traditional pitot tube and found this to be extremely accurate and much more user friendly so I now only use this. It has a max velocity of 6,000 FPM, so while it works for traditional dust collection it does not work for high performance applications (like Negative Lift systems). Its minimum temp is somewhere around -10 degF, so it does not work in extreme winter conditions. The bulb is sensitive to buildup, but less sensitive than my collapsible pitot tube. Eventually, the bulb does bend over and even if you straighten it the readings will be incorrect. That's when its time to throw it out and get a new one. Over all, I highly recommend.
Review: Simple, solid, does the job - Connects instantly to bluetooth at the press of the on button. Gives you temp & fpm flow continuously on a phone app. Nice telescoping probe. Compact quality tool. Used it for many hours so far on the original battery.

## Features

- Reliable; The hot wire handheld anemometer provides precise measurements of air velocity, temperature, and in-duct airflow, and can calculate volume flow when duct dimensions are provided
- Practical; The hinged, telescopic shaft of the cfm meter extends up to 15", making it easy to measure airflow even in tight ducts, vents, or other hard-to-reach areas during HVAC inspections
- Portable; This compact windflow meter is lightweight and easy to carry, saving time and effort and making it suitable for personal and professional servicing of air conditioning or HVAC systems
- Wireless; Equipped with Bluetooth 4.0, the air flow meter connects effortlessly to smartphones or tablets, allowing users to take accurate remote readings without being tied to the device
- Smart; The Smart Probe App for testo gauges hvac provides convenient instrument readings as tables and graphs. All measured data collected with the anemometer can be stored, retrieved, or included in custom reports

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B018VO5GI2 |
| Batteries | 3 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #29,414 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Anemometers |
| Brand | Testo |
| Color | Black/Orange |
| Customer Reviews | 4.6 4.6 out of 5 stars (571) |
| Date First Available | February 22, 2016 |
| Global Trade Identification Number | 04029547014260 |
| Included Components | testo 405i hot-wire anemometer, 3 AAA batteries and certificate of conformity |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 4.2 ounces |
| Item dimensions L x W x H | 7.87 x 1.18 x 1.61 inches |
| Item model number | 0560 1405 01 |
| Manufacturer | Testo |
| Material | Metal, Plastic |
| Measurement Accuracy | ±0.9 °F / ±0.5 °C |
| Number Of Pieces | 1 |
| Part Number | BAN7013006 |
| Product Dimensions | 7.87 x 1.18 x 1.61 inches |
| Size | small |
| Special Features | Measurement data is transmitted to the convenient and powerful testo Smart Probes App in your smart device, Measures air velocity, volume flow, and temperature, Measures in-duct air flow and automatically calculates volume flow (enter duct dimensions simply), Small dia. |
| Style | Wireless Smart Probe |
| Thickness | Not applicable Inches |
| Voltage | 4.5 Volts |

## Product Details

- **Brand:** Testo
- **Item Weight:** 4.22 Ounces
- **Item dimensions L x W x H:** 7.87 x 1.18 x 1.61 inches
- **Material:** Metal, Plastic
- **Voltage:** 4.5 Volts

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/41jIXLuWH9L.jpg)

## Questions & Answers

**Q: Can you use it to measure air mass? Like kg / hour? And does it compensate for air temperature and air pressure?**
A: It measures air velocity, period. Does not compensate for pressure or temperature. Does not measure air mass flow directly.

**Q: Can it calculate or convert to Feet per minute?**
A: 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)

**Q: Can you use it to measure the delta?**
A: There's a trendline function that can keep track of changing temp over time.

**Q: Does this device show a live CFM reading?**
A: Why yes it does sir

## Customer Reviews

### ⭐⭐⭐⭐⭐ Dust Collection Balancing Game Changer
*by R***N on August 12, 2025*

I'm on my second one of these. I start up industrial dust collection systems and traditionally use a pitot tube and Dwyer digital manometer. I did several duct balancing trips where I used this and the traditional pitot tube and found this to be extremely accurate and much more user friendly so I now only use this. It has a max velocity of 6,000 FPM, so while it works for traditional dust collection it does not work for high performance applications (like Negative Lift systems). Its minimum temp is somewhere around -10 degF, so it does not work in extreme winter conditions. The bulb is sensitive to buildup, but less sensitive than my collapsible pitot tube. Eventually, the bulb does bend over and even if you straighten it the readings will be incorrect. That's when its time to throw it out and get a new one. Over all, I highly recommend.

### ⭐⭐⭐⭐⭐ Simple, solid, does the job
*by A***R on June 12, 2023*

Connects instantly to bluetooth at the press of the on button. Gives you temp & fpm flow continuously on a phone app. Nice telescoping probe. Compact quality tool. Used it for many hours so far on the original battery.

### ⭐⭐⭐⭐⭐ Checking HVAC Air Flow
*by J***. on April 5, 2025*

I use this to check the air flow in my HVAC system to determine when air filters need to be replaced. The bluetooth connection and the app work great. (Retired HVAC geek.🙂)

## Frequently Bought Together

- testo 405i – Anemometer handheld for air velocity, in-duct airflow, and temperature – CFM meter with Bluetooth and App operation
- Testo 605i | Thermohygrometer for Indoor Temperature and Humidity Measurement | with Bluetooth Support
- Testo 0560 1510 510I Differential Pressure Manometer Smart and Wireless Probe, 1" Height, 1" Width, 6" Length

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sn/products/25479456-405i-anemometer-handheld-for-air-celocity-in-duct-airflow-temperature](https://www.desertcart.sn/products/25479456-405i-anemometer-handheld-for-air-celocity-in-duct-airflow-temperature)

---

*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-01-25*