--- product_id: 3537656 title: "445814 Humidity Alert Hygro-Thermometer with Dew Point - Digital Indoor Humidity Monitor, Programmable Visual and Audible Alarms, Min/Max Memory, Wall Mount or Desktop Stand" brand: "extech instruments" price: "79971CFA" currency: XOF in_stock: true reviews_count: 12 category: "Extech Instruments" url: https://www.desertcart.sn/products/3537656-445814-humidity-alert-hygro-thermometer-with-dew-point-digital-indoor store_origin: SN region: Senegal --- # Humidity 10-99% RH Programmable audible humidity alert Temp range -10 to 60°C 445814 Humidity Alert Hygro-Thermometer with Dew Point - Digital Indoor Humidity Monitor, Programmable Visual and Audible Alarms, Min/Max Memory, Wall Mount or Desktop Stand **Brand:** extech instruments **Price:** 79971CFA **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 Humidity Alert Hygro-Thermometer with Dew Point - Digital Indoor Humidity Monitor, Programmable Visual and Audible Alarms, Min/Max Memory, Wall Mount or Desktop Stand by extech instruments - **How much does it cost?** 79971CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/3537656-445814-humidity-alert-hygro-thermometer-with-dew-point-digital-indoor) ## 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 The Extech 445814 is a professional-grade environmental monitor designed to provide total control over your indoor climate. Perfect for homeowners, lab technicians, and facility managers, this Humidity Alert Hygro-Thermometer goes beyond basic sensors by offering a specialized Dew Point calculation. By understanding the relationship between temperature and moisture, you can proactively manage environments to prevent wood rot, rust, or the dangerous onset of mold. The standout feature of the 445814 is its fully programmable alarm system. When humidity levels exceed or drop below your designated set points, the device triggers a loud audible buzzer and a flashing visual LED, ensuring you never miss a critical change in air quality. The large, high-contrast display shows temperature in either Celsius or Fahrenheit, while the Min/Max function keeps a historical record of environmental extremes. Built for long-term reliability and housed in a durable casing, the Extech 445814 is the ultimate diagnostic tool for maintaining optimal conditions in wine cellars, server rooms, greenhouses, and industrial storage facilities. Review: Dew point display is helpful - Dew point display was the feature that made me buy this product. It has worked well, has a long battery life, and is accurate. The dew point shows how much humidity I can safely add in the winter without condensation forming on the windows. It also indicates the efficiency of the air conditioner in the summer. "Delta T" (the change in temperature, the temperature of the intake air minus the temperature of the chilled air) shows how much heat the air conditioner is removing. Since the a/c also removes moisture, the dew point tends to be the same as the evaporator plates, which is the temperature of the chilled air. (Unless you live in a dry climate.) So, just noting the difference between the ambient air and dew point indicates the efficiency. It is amazing how much more efficient the a/c is in the morning, when the outside temperature is in the 70s versus how little chilling happens in the afternoon in the 90s. I quit running the a/c in the mid afternoon, and save a few buck on the electricity. It is a fine product. Spread the word about the dew point! Review: Great Gadget to monitor humidity - Very accurate readings. Matches my de-humidifier within 1 or 2 degrees. If you have problems with humidity this gadget was recommended to me by my hardwood flooring company to monitor "buckling" in the floor boards. Works great. ## Features - ADVANCED HUMIDITY ALERT SYSTEM: Take the guesswork out of climate control with programmable visual and audible alarms. Set your custom high or low humidity limits and receive instant alerts to prevent mold growth or protect sensitive equipment. - COMPREHENSIVE DEW POINT CALCULATION: Gain a deeper understanding of your environment by monitoring dew point alongside temperature and humidity. This essential metric helps you predict condensation and manage moisture levels with expert precision. - CRYSTAL CLEAR DUAL DISPLAY: View all critical data at once on the large, easy-to-read LCD screen. The simultaneous display of temperature and humidity ensures you have a complete snapshot of your indoor climate without ever pressing a button. - INTELLIGENT DATA TRACKING: Capture and recall the highest and lowest readings with the integrated Min/Max memory function. This allows you to monitor environmental fluctuations over time and identify problematic trends in your home or workspace. - VERSATILE MOUNTING OPTIONS: Adapt the monitor to any space using the built-in tilt stand for desktop use or the integrated wall mount. Whether in a laboratory, greenhouse, or basement, this rugged device provides reliable monitoring where it matters. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000BF0ZTU | | Battery Description | Battery operated (battery type and number not specified) | | Best Sellers Rank | #208,486 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #34 in Humidifier Humidity Meters #232 in Humidifier Accessories | | Brand | Extech Instruments | | Brand Name | Extech Instruments | | Color | Green | | Customer Reviews | 4.1 out of 5 stars 60 Reviews | | Global Trade Identification Number | 00793950458143 | | Included Components | Meter, Probe, Batt | | Item Dimensions W x H | 5.5"W x 1"H | | Item Weight | 0.38 Pounds | | Lower Temperature Rating | 5 Degrees Celsius | | LowerTemperature Range | 5 Degrees Celsius | | Manufacturer | Extech | | Model | 445814 | | Mounting Type | Wall Mount | | Operating Humidity | 10-99% | | Part Number | 445814 | | Product Dimensions | 5.5"W x 1"H | | Smart Home Compatibility | Not Smart Home Compatible | | 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 Range | 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:** 0.38 Pounds - **Product Dimensions:** 5.5"W x 1"H ## Images ![445814 Humidity Alert Hygro-Thermometer with Dew Point - Digital Indoor Humidity Monitor, Programmable Visual and Audible Alarms, Min/Max Memory, Wall Mount or Desktop Stand - Image 1](https://m.media-amazon.com/images/I/61sEM1xZ7qL.jpg) ![445814 Humidity Alert Hygro-Thermometer with Dew Point - Digital Indoor Humidity Monitor, Programmable Visual and Audible Alarms, Min/Max Memory, Wall Mount or Desktop Stand - Image 2](https://m.media-amazon.com/images/I/91sfMt6JSFL.jpg) ![445814 Humidity Alert Hygro-Thermometer with Dew Point - Digital Indoor Humidity Monitor, Programmable Visual and Audible Alarms, Min/Max Memory, Wall Mount or Desktop Stand - Image 3](https://m.media-amazon.com/images/I/516yUs60JkL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Dew point display is helpful *by J***S on July 13, 2008* Dew point display was the feature that made me buy this product. It has worked well, has a long battery life, and is accurate. The dew point shows how much humidity I can safely add in the winter without condensation forming on the windows. It also indicates the efficiency of the air conditioner in the summer. "Delta T" (the change in temperature, the temperature of the intake air minus the temperature of the chilled air) shows how much heat the air conditioner is removing. Since the a/c also removes moisture, the dew point tends to be the same as the evaporator plates, which is the temperature of the chilled air. (Unless you live in a dry climate.) So, just noting the difference between the ambient air and dew point indicates the efficiency. It is amazing how much more efficient the a/c is in the morning, when the outside temperature is in the 70s versus how little chilling happens in the afternoon in the 90s. I quit running the a/c in the mid afternoon, and save a few buck on the electricity. It is a fine product. Spread the word about the dew point! ### ⭐⭐⭐⭐⭐ Great Gadget to monitor humidity *by F***L on January 23, 2017* Very accurate readings. Matches my de-humidifier within 1 or 2 degrees. If you have problems with humidity this gadget was recommended to me by my hardwood flooring company to monitor "buckling" in the floor boards. Works great. ### ⭐⭐⭐⭐ Good product, excellent price! *by J***O on July 24, 2009* I buy this hygrometer mainly to measure the dew point. The calibration with Boveda Hygrometer Calibration Kit were correct. The only point against is that it is a little slow to update the temperature. ## Frequently Bought Together - EXTECH Instruments Digit Thermometer - Extech 445713 Big Digit Indoor/Outdoor Hygro-Thermometer - Extech RHM15 Mini Temp and RH Indicator --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/3537656-445814-humidity-alert-hygro-thermometer-with-dew-point-digital-indoor](https://www.desertcart.sn/products/3537656-445814-humidity-alert-hygro-thermometer-with-dew-point-digital-indoor) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-02*