--- product_id: 3537656 title: "Extech 445814 Humidity Alert Hygro-Thermometer with Dew Point" brand: "extech instruments" price: "R2345" currency: ZAR in_stock: true category: "Extech" url: https://www.desertcart.co.za/products/3537656-extech-445814-humidity-alert-hygro-thermometer-with-dew-point store_origin: ZA region: South Africa --- # ±0.4°C accuracy Custom humidity alerts Dual large LCD display Extech 445814 Humidity Alert Hygro-Thermometer with Dew Point **Brand:** extech instruments **Price:** R2345 **Availability:** ✅ In Stock ## Summary > 🌡️ Stay ahead of moisture—because your environment deserves expert care! ## Quick Answers - **What is this?** Extech 445814 Humidity Alert Hygro-Thermometer with Dew Point by extech instruments - **How much does it cost?** R2345 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/3537656-extech-445814-humidity-alert-hygro-thermometer-with-dew-point) ## 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 - • **Dew Point Mastery:** Monitor dew point alongside temperature and humidity for expert moisture management and condensation prediction. - • **Data-Driven Insights:** Min/Max memory tracks environmental highs and lows, helping you identify trends and optimize conditions over time. - • **Flexible Installation:** Use the built-in tilt stand or wall mount to seamlessly integrate this rugged monitor into any professional or home setting. - • **Precision Climate Control:** Set exact humidity limits with programmable audible and visual alarms to protect your space from mold and damage. - • **Instant Environmental Snapshot:** Large dual LCD screen displays temperature and humidity simultaneously—no button pressing needed. ## Overview The Extech 445814 Humidity Alert Hygro-Thermometer is a professional-grade environmental monitor featuring precise temperature accuracy (±0.4°C), programmable high/low humidity alarms with audible and visual alerts, and comprehensive dew point calculation. Its large dual LCD display shows temperature and humidity simultaneously, while Min/Max memory tracks environmental extremes. Designed for versatile mounting, this durable device is ideal for managing indoor climates in labs, greenhouses, server rooms, and homes to prevent mold, rust, and moisture damage. ## 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. ## 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 | #143,283 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #21 in Humidifier Humidity Meters #107 in Humidifier Accessories | | Brand Name | Extech Instruments | | Color | Green | | Customer Reviews | 4.1 4.1 out of 5 stars (60) | | Global Trade Identification Number | 00793950458143 | | Included Components | Meter, Probe, Batt | | Item Dimensions W x H | 5.5"W x 1"H | | Item Weight | 6.08 ounces | | LowerTemperature Range | 5 °C | | Manufacturer | Extech | | Model | 445814 | | Mounting Type | Wall Mount | | Number of Items | 1 | | Operating Humidity | 10-99% | | Part Number | 445814 | | 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 °C | | Voltage | 1.5 volts_of_direct_current | | 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 ![Extech 445814 Humidity Alert Hygro-Thermometer with Dew Point - Image 1](https://m.media-amazon.com/images/I/61sEM1xZ7qL.jpg) ![Extech 445814 Humidity Alert Hygro-Thermometer with Dew Point - Image 2](https://m.media-amazon.com/images/I/41Xyg5nnVHL.jpg) ![Extech 445814 Humidity Alert Hygro-Thermometer with Dew Point - Image 3](https://m.media-amazon.com/images/I/51-jmBKZFjL.jpg) ![Extech 445814 Humidity Alert Hygro-Thermometer with Dew Point - Image 4](https://m.media-amazon.com/images/I/516yUs60JkL.jpg) ## Available Options This product comes in different **Size, Style** options. ## 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.co.za/products/3537656-extech-445814-humidity-alert-hygro-thermometer-with-dew-point](https://www.desertcart.co.za/products/3537656-extech-445814-humidity-alert-hygro-thermometer-with-dew-point) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-08-27*