---
product_id: 277197594
title: "EXTRH300 EXTECH RH300 - HUMIDITY METER with DEW POINT"
brand: "extech"
price: "$833859"
currency: COP
in_stock: true
url: https://www.desertcart.co/products/277197594-extrh300-extech-rh300-humidity-meter-with-dew-point
store_origin: CO
region: Colombia
---

# Dual LCD for RH & Temp Powered by 2x AAA batteries °C/°F selectable units EXTRH300 EXTECH RH300 - HUMIDITY METER with DEW POINT

**Brand:** extech
**Price:** $833859
**Availability:** ✅ In Stock

## Summary

> 🌟 Stay ahead of the curve with precision humidity insights!

## Quick Answers

- **What is this?** EXTRH300 EXTECH RH300 - HUMIDITY METER with DEW POINT by extech
- **How much does it cost?** $833859 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/277197594-extrh300-extech-rh300-humidity-meter-with-dew-point)

## 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

- • **Lightweight & Portable:** At just 20g, carry precision measurement wherever you go.
- • **Simultaneous Dual Display:** Monitor humidity and temperature side-by-side for instant insights.
- • **Vibrant Orange ABS Casing:** Stand out on your desk with a durable, eye-catching design.
- • **Versatile Temperature Units:** Switch effortlessly between Celsius and Fahrenheit to suit your preference.
- • **Reliable Dew Point Measurement:** Stay ahead of moisture issues with accurate dew point readings.

## Overview

The Extech RH300 is a lightweight, corded-electric humidity meter featuring a dual LCD that simultaneously displays relative humidity and temperature in °C or °F. Powered by 2 AAA batteries, its durable orange ABS casing and reliable dew point measurement make it an essential tool for professionals monitoring environmental conditions.

## Description

Extech - EXTRH300 EXTECH RH300 - HUMIDITY METER with DEW POINT

## Features

- Dual LCD for simultaneous display of Relative Humidity and Temperature Temperature is °C/°F

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Extech Instruments |
| Part number | EXTRH300 |
| Item Weight | 20 g |
| Product Dimensions | 7.87 x 4.83 x 22.86 cm; 20 g |
| Item model number | RH300 |
| Color | Orange |
| Style | Humidity Meter and Dew Point |
| Material | ABS |
| Pattern | Thermometer |
| Power source type | corded-electric |
| Voltage | 1.5 Volts (DC) |
| Item Package Quantity | 1 |
| Plug Profile | Tabletop |
| Batteries Included? | No |
| Batteries Required? | Yes |
| tech_spec_battery_description_toys | 2 x AAA (1.5V) |

## Product Details

- **Colour:** Orange
- **Brand:** Extech
- **Item weight:** 0.02 Kilograms
- **Battery description:** 2 x AAA (1.5V)
- **Mounting type:** Tabletop

## Images

![EXTRH300 EXTECH RH300 - HUMIDITY METER with DEW POINT - Image 1](https://m.media-amazon.com/images/I/519NUFqGbhL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does this come with a case?**
A: No it Doesn’t

**Q: What is the humidity range it can measure?**
A: Hello, Thanks for your question, The humidity range is 10 to 90%RH, the Max resolution is: 0.1%RH and the basic acuracy±3%RH. if you have any questions, feel free to contact our technical support line at 866-477-3687 option 3

**Q: Can i use this for test the % of humidity in food, like mixed corn?**
A: No. You can't use this meter for measure humidity in food. This meter is for ambient temperature, ambient humidity, dew point and other variables. Also, you can use an optional wire probe for measure temperature in food, but not humidity.

## Frequently Bought Together

- Extech EXTRH300 EXTECH RH300 - Humidity Meter with Dew Point
- General Tools MMD4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit LCD Display With Audible and Visual High-Medium-Low Moisture Content Alerts, Grays

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**Shop now:** [https://www.desertcart.co/products/277197594-extrh300-extech-rh300-humidity-meter-with-dew-point](https://www.desertcart.co/products/277197594-extrh300-extech-rh300-humidity-meter-with-dew-point)

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-02-23*