---
product_id: 3537656
title: "445814 Stationary Hygro Thermometer Psychrometer with Audible Humidity Alert"
brand: "extech instruments"
price: "A$189"
currency: AUD
in_stock: true
reviews_count: 12
category: "Extech"
url: https://www.desertcart.com.au/products/3537656-445814-stationary-hygro-thermometer-psychrometer-with-audible-humidity-alert
store_origin: AU
region: Australia
---

# Humidity 10-99% RH Programmable audible humidity alert Temp range -10 to 60°C 445814 Stationary Hygro Thermometer Psychrometer with Audible Humidity Alert

**Brand:** extech instruments
**Price:** A$189
**Availability:** ✅ In Stock

## Summary

> 🌿 Stay ahead of the curve with real-time humidity alerts — because comfort is a power move.

## Quick Answers

- **What is this?** 445814 Stationary Hygro Thermometer Psychrometer with Audible Humidity Alert by extech instruments
- **How much does it cost?** A$189 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/3537656-445814-stationary-hygro-thermometer-psychrometer-with-audible-humidity-alert)

## Best For

- extech instruments enthusiasts

## Why This Product

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

## Key Features

- • **All-in-One Display:** Large LCD shows temperature, humidity, and dew point simultaneously for quick, confident monitoring.
- • **Long-Lasting & Reliable:** Battery-powered with included AAA batteries ensures continuous performance without frequent replacements.
- • **Precision Climate Control:** Accurate ±1°C temperature & ±4% humidity readings keep your environment perfectly balanced.
- • **Versatile Mounting Options:** Includes built-in stand and wall bracket for seamless placement in any professional or home setting.
- • **Instant Alerts, Zero Guesswork:** Customizable audible and visual alarms notify you the moment humidity crosses your set threshold.

## Overview

The Extech 445814 Stationary Hygro Thermometer Psychrometer delivers precise temperature (-10 to 60°C) and humidity (10-99% RH) monitoring with ±1°C and ±4% accuracy. Featuring a large LCD that displays temperature, humidity, and dew point simultaneously, it includes programmable audible and visual alarms to alert you when humidity exceeds preset limits. Designed for professional and home use, it comes with a built-in stand, wall bracket, and included AAA batteries for reliable, continuous operation.

## Description

This Humidity Alert Hygro-Thermometer has a programmable %RH audible and visual alarm that alerts you when humidity exceeds the set limit. Large LCD simultaneously displays Temperature, Humidity and Dew Point. Product measures Humidity from 10 to 99% and Temperature from 14 to 140°F (-10 to 60°C). The meter has a basic accuracy of ±4%RH and ±1.8°F/1°C. Rear calibration pot for Humidity and Temperature. Featuring maximum/minimum with reset functions that store and recall the highest and lowest readings recorded. Comes complete with built-in stand, wall bracket and AAA battery.

Review: A fine instrument that is accurate, well made, and reliable. - I am glad I purchased this humidity & temperature indicator before I purchased a humidifier. I found out that I did not need a humidifier ( found out the bedroom is 45% to 50% RH ). The unit is well made, does not run through batteries, & I am happy with it.
Review: Nice Humidly Alert and Temp Display - I set mine up for my T room. With the nice large LCD readout at a quick glance I can see what each enclosure's humidity and temperature is. I don't use the alarm features since I have a room humidifier control system that has alerts for the overall room humidity. Overall, this is a nice, easy to ready, humidity and Temperature display + options with audible alarms for Max and Minimum thresholds. I have one sitting on each of my enclosures with the probe inserted to measure humidity. Works Great. Would like to have seen included a probe attachment; such as a suction cup for glass and or a hook for wire enclosures.

## Features

- Rugged, PVC-bodied pH sensing electrode for solid products with minimal moisture contents
- Rugged, compact size PVC-bodied electrode
- Ideal for pH of solid products with minimal moisture like cheese, soils or electrophoretic/agar gels
- 0 to 14pH range
- 5 to 80-Degrees C operating temperature

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BF0ZTU |
| Batteries | 2 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Battery Description | Battery operated (battery type and number not specified) |
| Best Sellers Rank | #170,249 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #26 in Humidifier Humidity Meters #408 in Humidifier Accessories |
| Brand | Extech Instruments |
| Color | Green |
| Customer Reviews | 4.4 4.4 out of 5 stars (623) |
| Date First Available | September 12, 2005 |
| Description Pile | Battery operated (battery type and number not specified) |
| Global Trade Identification Number | 00793950458143 |
| Included Components | Built-in stand, wall bracket and AAA battery |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 6.1 ounces |
| Item model number | 445814 |
| Lower Temperature Rating | 5 Degrees Celsius |
| Manufacturer | Extech |
| Measurement Accuracy | Temp: ±1°C / RH: ±4% |
| Mounting Type | Wall Mount |
| Number Of Pieces | 1 |
| Operating Humidity | 10-99% |
| Part Number | 445814 |
| Power Source | Battery Powered |
| Product Dimensions | 5.5"W x 1"H |
| Size | Stationary Hygro-Thermometer |
| Style | With Alarm |
| Temperature Accuracy | ±0.4°C from -10 to 50°C and ±0.6°C from 50 to 80°C |
| Temperature Reading Accuracy | plus_minus_0_point_5_degrees_celsius |
| UPC | 785533667073 793950458143 |
| Upper Temperature Rating | 80 Degrees Celsius |
| Voltage | 1.5 Volts (DC) |
| Warranty Description | 1 Year |

## Product Details

- **Battery Description:** Battery operated (battery type and number not specified)
- **Brand:** Extech Instruments
- **Color:** Green
- **Item Weight:** 6.08 ounces
- **Product Dimensions:** 5.5"W x 1"H

## Images

![445814 Stationary Hygro Thermometer Psychrometer with Audible Humidity Alert - Image 1](https://m.media-amazon.com/images/I/61sEM1xZ7qL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ A fine instrument that is accurate, well made, and reliable.
*by S***D on October 27, 2025*

I am glad I purchased this humidity & temperature indicator before I purchased a humidifier. I found out that I did not need a humidifier ( found out the bedroom is 45% to 50% RH ). The unit is well made, does not run through batteries, & I am happy with it.

### ⭐⭐⭐⭐⭐ Nice Humidly Alert and Temp Display
*by D***K on September 16, 2013*

I set mine up for my T room. With the nice large LCD readout at a quick glance I can see what each enclosure's humidity and temperature is. I don't use the alarm features since I have a room humidifier control system that has alerts for the overall room humidity. Overall, this is a nice, easy to ready, humidity and Temperature display + options with audible alarms for Max and Minimum thresholds. I have one sitting on each of my enclosures with the probe inserted to measure humidity. Works Great. Would like to have seen included a probe attachment; such as a suction cup for glass and or a hook for wire enclosures.

### ⭐⭐⭐⭐⭐ Have two, have been using both for years and years
*by J***E on June 17, 2025*

We have two and have used them for years to measure both dryness and moisture. The readings differ by just a little bit. I think I returned a third one for being much further off calibration, so it may take a couple rounds when you purchase these. The device allows detach the sensor from the base and thus some ability to measure into places slightly distant from the base. Mostly, though, they reside on furniture and measure ambient air humidity. It does a good job of supplementing my dehumidifier readings as well, as those dehumidifier readings can be way off.

## Frequently Bought Together

- EXTECH Instruments Digit Thermometer
- Extech 445713 Big Digit Indoor/Outdoor Hygro-Thermometer
- Extech RHM15 Mini Temp and RH Indicator

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-19*