---
product_id: 4910651
title: "Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light)"
brand: "extech"
price: "€ 450.68"
currency: EUR
in_stock: true
reviews_count: 10
category: "Extech"
url: https://www.desertcart.nl/products/4910651-extech-45170-four-in-one-environmental-meter-hygro-thermo-anemometer
store_origin: NL
region: Netherlands
---

# Light up to 20,000 lux Air velocity in 5 units Measures temp 32-122°F Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light)

**Brand:** extech
**Price:** € 450.68
**Availability:** ✅ In Stock

## Summary

> 🌟 Master your environment with one sleek meter — because precision is the new power!

## Quick Answers

- **What is this?** Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light) by extech
- **How much does it cost?** € 450.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/4910651-extech-45170-four-in-one-environmental-meter-hygro-thermo-anemometer)

## Best For

- extech enthusiasts

## Why This Product

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

## Key Features

- • **4-in-1 Precision:** Humidity, temperature, air velocity, and light sensors in one sleek tool
- • **Dual LCD Display:** Simultaneously track temperature & air velocity or humidity for instant insights
- • **Compact Powerhouse:** Pocket-sized rugged design fits your on-the-go lifestyle
- • **Data Hold & Min/Max:** Freeze readings and capture extremes to never miss critical data
- • **Versatile Measurement:** Supports Type K input for high-temp surface readings (probe sold separately)

## Overview

The Extech 45170 is a rugged, pocket-sized 4-in-1 environmental meter that accurately measures humidity, temperature, air velocity, and light. Featuring a dual LCD for simultaneous readings, it supports Type K thermocouple input for high-temperature measurements and includes data hold and min/max recording functions. Lightweight and battery-powered, it’s designed for professionals needing precise environmental data on the move.

## Description

Product Description This 4-in-1 meter measures Humidity, Temperature, Air Velocity and Light. The dual LCD simultaneously displays Temperature and Air Velocity or Relative Humidity. High Temperature air or surface measurements can be made using the built-in Type K input. Comes complete with built-in Humidity sensor, Light sensor and Vane wheel, wrist strap, and 9-Volt battery. desertcart.com The pocket-sized, four-in-one Extech 45170 hygro-thermo-anemometer-light meter displays temperature and gives you a choice between showing relative humidity or air velocity. Temperature air or surface measurements can be made using the built-in Type K input (thermocouple probe sold separately). Additionally, the 45170 includes a light sensor, and its display reverses when in light mode. Type K temperature input (probe sold separately, view larger). The 45170 features a built in thermistor for ambient temperature measurements and a precision thin-film capacitance humidity sensor for fast response. The low friction vane wheel improves accuracy when measuring air velocity in ft/min, mph, m/s, km/h, and knots. For light measurement, the 45170 utilizes a precision photo diode and color correction filter and can provide cosine and color corrected light measurements. Other features include recording of minimum/maximum readings, a Data Hold function to freeze the displayed value, auto power off, and low battery indication. The device has a temperature range of 32 to 122 degrees F, a humidity range of 10 to 95 percent relative humidity (RH), and light measurement capabilities of up to 1860 foot candles or 20,000 lux. Additionally, it offers the following air velocity measurement ranges: MeasurementsThe 45170 measures 6.1 x 2.4 x 1.3 inches (HxWxD), weighs 5 ounces, and is powered by a single 9-volt battery. It's backed by a one-year limited warranty.What's in the Box45170 Hygro-Thermo-Anemometer-Light Meter, wrist strap, 9-volt battery, operating instructions P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the Manufacturer 4-in-1 meter measures Humidity, Temperature, Air Velocity and Light. Dual LCD simultaneously displays Temperature and Air Velocity or Relative Humidity. High Temperature air or surface measurements can be made using the built-in Type K input. Comes complete with built-in Humidity sensor, Light sensor and Vane wheel, wrist strap, and 9V battery. See more

Review: Glad that I found this tool - This gadget is accurate and so handy for energy savings calculations. The shipping was free, and the price reasonable. The product has helped in HVAC, lighting and heat recovery.
Review: THEY OMITTED the Air Velocity Measurement Range & I Broke It Instantly - Welp, I absolutely destroyed the air velocity fan within 2 seconds of using it the first time. I had searched the description for the range of speeds it measured in the , but as of 8/22/24 you can see in two places in the desertcart description above that it says "Additionally, it offers the following air velocity measurement ranges: Measurements." The word "Measurements" being a placeholder for the actual information, I suspect." A few lines down, it lists the ranges for the other 3 qualities it measures, but again, has a placeholder where the air velocity range should be. I took a chance testing out a blower, the kind for blowing dust from your garage or room. As I said, it absolutely crumpled the fans before I had the reflexes to pull the tool from the stream of air. I'd love to be able to tell you what speed you'll breaks yours at, but I can't. At least the other 3 functions work. HOPEFULLY they're Product Development team will finish the specs in the description and prevent some other poor sap from breaking a quarter of a $200 tool.

## Features

- Pocket size rugged 4-in-1 meter for humidity, temperature, air, velocity and light
- Ergonomic pocket size housing with large dual LCD simultaneous display of temperature and air velocity or relative humidity
- Characters on display reverse direction depending on Hygro-Thermo-Anemometer or light mode
- Data hold to freeze the displayed value
- Records Min/Max readings

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004AZ6I3Y |
| Batteries | 2 Lithium Ion batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #157,138 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #18 in Anemometers |
| Brand | Extech |
| Color | Green |
| Customer Reviews | 3.6 3.6 out of 5 stars (25) |
| Date First Available | November 5, 2010 |
| Display Style | LCD |
| Global Trade Identification Number | 00793950451700 |
| Included Components | Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light) |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 3.84 ounces |
| Item dimensions L x W x H | 2.4 x 1.3 x 6.1 inches |
| Item model number | 45170 |
| Manufacturer | Extech |
| Material | Metal |
| Measurement Accuracy | +/-0.5% |
| Mounting Type | Tabletop |
| Number Of Pieces | 1 |
| Part Number | 45170 |
| Pattern | Weather Station |
| Power Source | Battery Powered |
| Product Dimensions | 2.4 x 1.3 x 6.1 inches |
| Shape | Rectangular |
| Size | Thermo-Anemometer with Light |
| Style | 45170 |
| UPC | 793950451700 |
| Usage | Temperature |
| Voltage | 9 |
| Warranty Description | 1 year |

## Product Details

- **Brand:** Extech
- **Item Weight:** 3.84 Ounces
- **Item dimensions L x W x H:** 2.4 x 1.3 x 6.1 inches
- **Material:** Metal
- **Voltage:** 9

## Images

![Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light) - Image 1](https://m.media-amazon.com/images/I/415UVJDxo9L.jpg)
![Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light) - Image 2](https://m.media-amazon.com/images/I/419jYPQodRL.jpg)
![Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light) - Image 3](https://m.media-amazon.com/images/I/41usxixAI8L.jpg)
![Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light) - Image 4](https://m.media-amazon.com/images/I/51PA5j52zBL.jpg)
![Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light) - Image 5](https://m.media-amazon.com/images/I/51kS2sOrfjL.jpg)

## Questions & Answers

**Q: What is the minimum wind speed that this anemometer can measure accurately? I'm currently looking for an anemometer that can measure wind speed <1 m/s**
A: wind speed measurement for the 407113 CFM Anemometer is:
MPH: 1.1 to 78.3
knots: 1.0 to 68
km/h: 1.8 to 126
AIRFLOW:
CFM = FT3/MIN: 0 TO 999,900 CFM
CMM= M3/MIN: 0 TO 999,900 CMM

I hope this helps your decision to buy.

**Q: Is the 9 volt battery replaceable?  Does it have a tripod mount?**
A: Yes the battery is replaceable however it is a 3V #2032. To my knowledge no tripod mount is available.

**Q: can i buy  the probe seperatly**
A: Unfortunately, you cannot purchase the probe for this unit separately.  If you change the probe on the meter, it will no longer provide accurate readings. The meter is calibrated with the probe at the factory to provide accurate reading, and the meter can only be calibrated with one probe at a time.  If the probe is damaged, you will have to send the meter in to the factory to have a new probe calibrated with the meter.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Glad that I found this tool
*by J***D on October 31, 2011*

This gadget is accurate and so handy for energy savings calculations. The shipping was free, and the price reasonable. The product has helped in HVAC, lighting and heat recovery.

### ⭐⭐⭐ THEY OMITTED the Air Velocity Measurement Range & I Broke It Instantly
*by Y***D on August 22, 2024*

Welp, I absolutely destroyed the air velocity fan within 2 seconds of using it the first time. I had searched the description for the range of speeds it measured in the , but as of 8/22/24 you can see in two places in the Amazon description above that it says "Additionally, it offers the following air velocity measurement ranges: Measurements." The word "Measurements" being a placeholder for the actual information, I suspect." A few lines down, it lists the ranges for the other 3 qualities it measures, but again, has a placeholder where the air velocity range should be. I took a chance testing out a blower, the kind for blowing dust from your garage or room. As I said, it absolutely crumpled the fans before I had the reflexes to pull the tool from the stream of air. I'd love to be able to tell you what speed you'll breaks yours at, but I can't. At least the other 3 functions work. HOPEFULLY they're Product Development team will finish the specs in the description and prevent some other poor sap from breaking a quarter of a $200 tool.

### ⭐⭐⭐⭐ Great size..one piece
*by K***S on November 2, 2014*

Nice unit....takes a bit of getting used to turning it upside down for light meter, but is a super useful tool, and good size.

## Frequently Bought Together

- Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light)
- Duracell Coppertop 9V Battery, 2 Count Pack, 9-Volt Battery with Long-lasting Power, All-Purpose Alkaline 9V Battery for Household and Office Devices
- Duracell - CopperTop AA Alkaline Batteries - Long Lasting, All-Purpose Double A Battery for Household and Business, 4 Batteries, Power Remotes, Toys, and More, Reliable and Trustworthy

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-10*