---
product_id: 45664196
title: "RHT30 USB Humidity/Temperature Datalogger"
brand: "extech"
price: "₩435722"
currency: KRW
in_stock: true
reviews_count: 13
category: "Extech"
url: https://www.desertcart.kr/products/45664196-rht30-usb-humidity-temperature-datalogger
store_origin: KR
region: South Korea
---

# USB Excel data export 48,000 data points storage 3 months battery life RHT30 USB Humidity/Temperature Datalogger

**Brand:** extech
**Price:** ₩435722
**Availability:** ✅ In Stock

## Summary

> 📈 Elevate your environment monitoring game with precision and ease!

## Quick Answers

- **What is this?** RHT30 USB Humidity/Temperature Datalogger by extech
- **How much does it cost?** ₩435722 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/45664196-rht30-usb-humidity-temperature-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

- • **Triple LCD Display:** Simultaneously monitor humidity, temperature, and barometric pressure with crystal-clear visibility.
- • **Massive Data Storage:** Store up to 48,000 timestamped readings on an SD card for effortless long-term tracking.
- • **Smart Alerts & Security:** Adjustable alarms and password-protected log-in keep your data secure and actionable in real-time.
- • **Rugged & Portable Design:** Compact, wall-mountable, and built to withstand demanding environments while staying lightweight at 1.6 oz.
- • **Customizable Sampling Rates:** Choose from 2 seconds to 10 minutes intervals or Auto mode to perfectly match your monitoring needs.

## Overview

The Extech RHT30 USB Humidity/Temperature Datalogger is a professional-grade device designed for precise environmental monitoring. Featuring triple simultaneous LCD readouts, it records up to 48,000 data points with date/time stamps stored on an SD card, easily exportable via USB in Excel or PDF formats. Its programmable sampling intervals, long 3-month battery life, and rugged compact design make it ideal for diverse applications, from freezer monitoring to ambient temperature tracking. Enhanced with smart LED status indicators, adjustable alarms, and password protection, it ensures reliable, secure, and user-friendly data logging for professionals.

## Description

The datalogger is designed with a rugged housing and a standard USB connector where stored readings (up to 48,000 data) are conveniently transferred to a PC in PDF or Excel® spreadsheet format when plugged in. Additional features include an 8-location logger bookmark, 6-language options, programmable sampling interval, adjustable alarm, and password-protected security log-in. Large LCD optimizes viewing and the smart LED provides color-coded humidity, and temperature reading status.

Review: Awesome Datalogger - I bought this Data logger to log temps for Freezers, Ambient Car Temp (in the summer) and various other applications. Its very easy to use, Windows Interface works without complication for downloading and graphing Temp, Dew Point, Humidity. Software only works in Windows, but will work under VMWare Fusion (or Bootcamp / Parallels). This unit was bought used and but was in brand new condition (it appeared it had never been used) - very happy with this transaction and product. Only drawback I saw was when you download the data, it quits logging new data. You have to reset the logger (and clear its previous logs) before starting a new log. You can't "spot check" the temp and then return it to keep collecting data... other than that, its an awesome product.
Review: Muy buen equipo

## Features

- Triple LCD simultaneously displays three DC Current (mA) channels
- Datalogger date/time stamps and stores readings on an SD card in Excel format for easy transfer to a PC
- User can select the data sampling rate: 2, 5, 10, 30, 60, 120, 300, 600 seconds or Auto
- Long battery life (approx. 3 months)
- RHT35 has built-in barometric pressure MEMS sensor

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0714KYCT3 |
| Batteries | 2 Lithium Metal batteries required. (included) |
| Battery Description | 2 x CR2032 (1.5V) button cell batteries |
| Best Sellers Rank | #514,767 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #945 in Humidifier Accessories |
| Brand | Extech |
| Color | RHT30 |
| Date First Available | May 24, 2017 |
| Global Trade Identification Number | 00793950441305 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.6 ounces |
| Item model number | RHT30 |
| Manufacturer | Extech |
| Mounting Type | Wall Mount |
| Product Dimensions | 1.6 x 0.75 x 4.3 inches |
| Temperature Accuracy | 0.5 degrees_celsius |
| UPC | 793950441305 |
| Upper Temperature Rating | 158 Degrees Fahrenheit |
| Voltage | 1.5 Volts (DC) |

## Product Details

- **Battery Description:** 2 x CR2032 (1.5V) button cell batteries
- **Brand:** Extech
- **Color:** RHT30
- **Item Weight:** 0.1 Pounds
- **Mounting Type:** Wall Mount

## Images

![RHT30 USB Humidity/Temperature Datalogger - Image 1](https://m.media-amazon.com/images/I/71GJQp4gsmL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome Datalogger
*by J***N on August 26, 2011*

I bought this Data logger to log temps for Freezers, Ambient Car Temp (in the summer) and various other applications. Its very easy to use, Windows Interface works without complication for downloading and graphing Temp, Dew Point, Humidity. Software only works in Windows, but will work under VMWare Fusion (or Bootcamp / Parallels). This unit was bought used and but was in brand new condition (it appeared it had never been used) - very happy with this transaction and product. Only drawback I saw was when you download the data, it quits logging new data. You have to reset the logger (and clear its previous logs) before starting a new log. You can't "spot check" the temp and then return it to keep collecting data... other than that, its an awesome product.

### ⭐⭐⭐⭐⭐ Review
*by E***O on January 19, 2026*

Muy buen equipo

### ⭐⭐⭐⭐ Works great, PC required
*by A***R on August 21, 2011*

I wanted to keep track of the temp & humidity in my garage prior to installing a exhaust fan. The unit is well built and comes with several useful accessories. From the front panel you can see current/max/min temp & humidity. You need to connect it to a PC via USB to set the unit's date, time, and logging options. The software installed fine on my Win 7 64-bit PC. I downloaded the latest version from the Extech website. The software works surprisingly well. I was able to quickly set up a logging schedule, set the time on the unit, and switch to Fahrenheit. Many logging options are available, from 1 sample per second (max 4 hours, 32 minutes) to one sample every 24 hours, and everything in between. I used one sample per minute which will last 11 days 8 hours. You can have the unit stop logging after it collected the max # of sample, or overwrite the oldest data. It records temp & humidity simultaneously. After a week of of logging, I connected the unit to my PC and was able to download the data quickly and display it in graph or spreadsheet form. If you export the data to a file, it is a tab separated file, and can be opened in a spreadsheet. Each timestamped (m/d/y h:m:s) temp & RH reading will be in the file. The graphic display can't be saved by the program, but you can screen capture it. Data can also be stored in a propriety format for reading into the software later. On the not-so-great side, You can't do much from the front panel, like change from Celsius (factory default) to Fahrenheit or setup logging, or view previous logs. User manual is sparse (-1 star) and a little helpful. If you're not handy with a PC, this unit may not be for you. The front panel display is a bit confusing, there's some data there I don't understand. No backlight. The battery is one of those expensive non-rechargeable camera batteries, a standard 9V or AA, AA would have been nicer. There are two tiny (easy to lose) screws holding the battery cover in place, but the screws go into a metal sockets, not plastic - thank you Extech for that. The battery cover also looks to be environmentally sealed. Overall, I'm very happy with my purchase and recommend the RHT20.

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-05-27*