---
product_id: 15074183
title: "42280 Temperature and Humidity Datalogger"
brand: "extech"
price: "€ 435.60"
currency: EUR
in_stock: true
reviews_count: 3
url: https://www.desertcart.fi/products/15074183-42280-temperature-and-humidity-datalogger
store_origin: FI
region: Finland
---

# 3.5 x 1.5 x 4.75 in 4 AAA batteries 144°F max temp 42280 Temperature and Humidity Datalogger

**Brand:** extech
**Price:** € 435.60
**Availability:** ✅ In Stock

## Summary

> 🌟 Stay Ahead of the Curve with Precision Monitoring!

## Quick Answers

- **What is this?** 42280 Temperature and Humidity Datalogger by extech
- **How much does it cost?** € 435.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/15074183-42280-temperature-and-humidity-datalogger)

## 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

- • **Precision Monitoring:** Accurate temperature and humidity readings for optimal performance.
- • **Programmable Sorting:** Easily sort components with customizable Hi/Low values.
- • **User-Friendly Design:** Lightweight and portable at just 0.19 kg, perfect for on-the-go professionals.
- • **Built-In Test Fixture:** Conveniently test components without extra tools.
- • **Versatile Applications:** Ideal for HVAC, laboratories, and environmental monitoring.

## Overview

The Extech 42280 Temperature and Humidity Datalogger is a compact and efficient tool designed for professionals needing accurate environmental data. With a maximum temperature rating of 144°F and a user-friendly interface, it’s perfect for various applications, from HVAC to laboratory settings. This device is lightweight, battery-operated, and includes a built-in test fixture for added convenience.

## Description

View largerTemperature and Humidity DataloggerThe Extech 42280 is a wall-mount, tripod mount, or desktop indoor air quality monitor with an internal memory capable of storing 16,000 readings (8000 Temperature readings and 8000 Relative Humidity readings) that can later be transferred via USB to a PC using the included Windows compatible software.Additional FeaturesFeaturing a triple LCD that displays Humidity, Temperature, and date (Year, Month, and Day), this monitor can be programmed from the built-in keypad, or remotely from a PC, with selectable data sampling rates (1 second to 12 hours) and user programmable audible and visual high/low alarms for both Temperature (-4 to 144 degrees F /-20 to 70 degrees C) and Humidity (0 to 100 percent RH).What's in the BoxComes with USB cable, universal AC adaptor, four AA batteries, and user manual. A built-in utility allows for self-calibration using the optional RH300-CAL calibration kit that includes 33 percent and 75 percent RH calibration bottles.  More Extech Instruments to Choose FromView largerRHT10 Humidity And Temperature USB DataloggerThe RHT10 can record up to 32,000 readings (16,000 for each Humidity & Temperature parameter). The selectable data sampling rates are 2s, 5s, 10s, 30s, 1min, 5min, 10min, 30min, 1hr, 2hr, 3hr, 6hr, 12hr and 24hr. It has a user programmable alarm thresholds for RH and Temperature. It has a Humidity range of 0 to 100 percent RH, a Temperature range of -40 to 158 degrees F (-40 to 70 degrees C) and an accuracy of ±3 percent RH and ±1 degrees C/1.8 degrees F. This USB datalogger has a one year battery life and displays Dew Point temperature via the included Windows software. Comes with 3.6-volt lithium battery, a protective USB cap, mounting bracket, Windows compatible software for analysis, and user manual.View largerRHT20 Humidity And Temperature USB DataloggerThe RHT20 can record up to 32,000 readings (16,000 for each Humidity & Temperature parameter). The selectable data sampling rates are 2s, 5s, 10s, 30s, 1min, 5min, 10min, 30min, 1hr, 2hr, 3hr, 6hr, 12hr and 24hr. It has user programmable alarm thresholds for RH and Temperature. The LCD displays current temperature and humidity readings, Min/Max, and alarm status. It has a Humidity range of 0 to 100 percent RH, a Temperature range of -40 to 158 degrees F (-40 to 70 degrees C) and an accuracy of ±3 percent RH and ±1 degrees C/1.8 degrees F. USB connector easily plugs in to a PC for data analysis. Comes with a 3.6-volt lithium battery, a mounting bracket with combination lock, Windows compatible software, and user manual.View largerRHT50 Humidity/Temperature/Atmospheric Pressure DataloggerRecords Relative Humidity (0 to 100 percent RH), Temperature (-40 to 158 degrees F /-40 to 70 degrees C) and Atmospheric Pressure (13.7 to 15psi / 950 to 1050hPa / 95 to 105kPa / 0.9 to 1.0bar). Datalogs up to 10,000 readings with user programmable sample rate from 1 minute to 18 hours. USB interface for easy set-up and data download. Selectable Atmospheric Pressure Units: psi, hPa, kPa, and bar. User-programmable High/Low alarm thresholds. Manual and Programmable start modes. Status Indication via Red/Yellow LED and Green LED. Complete with 3.6-volt lithium battery, mounting bracket, Windows compatible analysis software, and user manual. Use 2 dataloggers to measure for positive/negative pressure between two rooms or indoors/outdoors.View largerWB200 Hygro-Thermometer DataloggerCombines traditional dry/wet bulb operation (refillable water tank) with electronic circuitry to provide accurate readings and trouble-free operation especially in dusty environments. Built-in fan provides fast response time. Audible and visual alarm alerts when temperature and humidity level is higher or lower than the user programmed High/Low set points. Datalogger with user programmable sampling rate (15 to 60 minutes) stores 100 records that can easily be recalled on the display. Measures Wet Bulb, Dew Point, Temperature (41 degrees F to 122 degrees F /5 degrees C to 50 degrees C) and Relative Humidity (0.0 to 99.9 percent RH). Comes with four AAA batteries, 100-240V Universal AC adapter, and user manual.

## Features

- Primary display of inductance, capacitance or resistance
- Secondary display of Q, dissipation (1/Q) and resistance
- Built-in test fixture or use external test leads
- Sort components using programmable Hi/Low values
- Parallel or series equivalent circuit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Extech |
| Item Weight | 0.19 Kilograms |
| Battery Description | AA batteries |
| Mounting Type | Wall Mount |
| Upper Temperature Rating | 144 Degrees Fahrenheit |
| Voltage | 3.6 Volts |
| Temperature Accuracy | 1 |
| Manufacturer | Extech |
| UPC | 785533938463 793950422809 767674936027 |
| Global Trade Identification Number | 00793950422809 |
| Part Number | 42280 |
| Item Weight | 6.7 ounces |
| Product Dimensions | 3.5 x 1.5 x 4.75 inches |
| Item model number | 42280 |
| Batteries | 4 AAA batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Description Pile | AA batteries |
| Warranty Description | 1 year |

## Product Details

- **Brand:** Extech
- **Item Weight:** 0.19 Kilograms
- **Battery Description:** AA batteries
- **Mounting Type:** Wall Mount
- **Upper Temperature Rating:** 144 Degrees Fahrenheit

## Images

![42280 Temperature and Humidity Datalogger - Image 1](https://m.media-amazon.com/images/I/61EkO+RXqyL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Five Stars
*by A***R on November 28, 2017*

Great, fast shipping works well.

### ⭐⭐⭐ Good temperature/humidity logger
*by P***5 on August 27, 2011*

I purchased this data logger to monitor the temperature & humidity in our data center. The connection to the PC is via USB and it works fairly well, however the software to gather data is rather archaic. The output is a text file which you can easily import into Excel for plotting if you need it. This was obviously an old serial data gathering application that was updated. Functional for what I need, but if you're expecting an intuitive GUI, you'll be disappointed. Don't even bother trying to set the parameters from the device, use the software.

### ⭐ Dissapointed with the performance of the product.
*by S***O on December 3, 2014*

We have bought two items and when we turned on the equipment the data seemed to be good but when the relative humidity when above 80% the data changed from each item, one 94% and the other 83% to much difference for 2 devices in the same place, we also saw the error test but the equipment is new, we will check this product with our electricity technician and also will need to calibrate the product but it appears that it was not calibrated from factory.

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-10*