--- product_id: 2175292 title: "- Extech 445580 Humidity and Temperature Pen with Fast Response Sensor, Min/Max Memory, Dual LCD, Pocket-Sized Hygrometer for HVAC, Labs, Storage Rooms, Indoor Air Monitoring" brand: "extech" price: "€ 134.40" currency: EUR in_stock: true reviews_count: 12 category: "Extech" url: https://www.desertcart.pt/products/2175292-extech-445580-humidity-and-temperature-pen-with-fast-response-sensor store_origin: PT region: Portugal --- # Fast response sensor Dual LCD with min/max memory Compact pen-sized design - Extech 445580 Humidity and Temperature Pen with Fast Response Sensor, Min/Max Memory, Dual LCD, Pocket-Sized Hygrometer for HVAC, Labs, Storage Rooms, Indoor Air Monitoring **Brand:** extech **Price:** € 134.40 **Availability:** ✅ In Stock ## Summary > 🌡️ Stay ahead of the curve with instant, on-the-go environmental insights! ## Quick Answers - **What is this?** - Extech 445580 Humidity and Temperature Pen with Fast Response Sensor, Min/Max Memory, Dual LCD, Pocket-Sized Hygrometer for HVAC, Labs, Storage Rooms, Indoor Air Monitoring by extech - **How much does it cost?** € 134.40 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/2175292-extech-445580-humidity-and-temperature-pen-with-fast-response-sensor) ## 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 - • **Trend Tracking Memory:** Min/max memory function helps you identify environmental fluctuations over time - • **Dual Display Efficiency:** Simultaneously monitor humidity and temperature on a crisp dual LCD 📊 - • **Pocket-Sized Portability:** Slim, pen-style design fits effortlessly in your pocket or tool kit 📏 - • **Instant Precision Readings:** Get humidity & temperature data in seconds with a lightning-fast sensor ⚡ - • **Professional-Grade Durability:** Robust build quality outperforms cheap clones for reliable, long-term use ## Overview The Extech 445580 is a compact, battery-powered humidity and temperature pen designed for professionals needing fast, accurate indoor environmental monitoring. Featuring a responsive sensor, dual LCD display, and min/max memory, it delivers reliable real-time data ideal for HVAC, labs, storage, and air quality control. Its durable, pocket-sized design ensures portability without sacrificing precision, making it a trusted tool for facility managers and technicians. ## Description The Extech 445580 Humidity/Temperature Pen is a compact, high-precision tool designed for fast and reliable indoor environmental monitoring. Engineered for HVAC professionals, inspectors, facility managers, and lab technicians, this pocket-sized meter provides instant readings of both humidity and temperature on a clear dual LCD display. Its responsive sensor ensures accurate real-time results, while the built-in min/max memory helps track fluctuations and verify long-term conditions. Lightweight and easy to carry, the 445580 is ideal for air quality assessments, comfort studies, storage verification, greenhouse monitoring, and workplace inspections. Whether you're validating HVAC performance or ensuring proper environmental control for sensitive materials, this dependable meter delivers professional-grade results in a portable, user-friendly design. ## Features - FAST HUMIDITY AND TEMPERATURE READINGS – Get quick, reliable measurements with a responsive sensor designed for on-the-spot indoor monitoring, making it perfect for HVAC checks, lab work, storage audits, and facility inspections. - COMPACT AND TRAVEL-READY DESIGN – Slim, pen-style housing fits easily in a pocket, tool pouch, or bag, giving technicians and inspectors a convenient, portable meter they can carry anywhere for instant environmental checks. - CLEAR DUAL LCD DISPLAY – Features a bright, easy-to-read dual display showing humidity and temperature at the same time, helping users confirm environmental conditions instantly without switching modes or wasting time. - MIN/MAX MEMORY FUNCTION – Tracks minimum and maximum humidity and temperature levels, allowing you to identify trends, troubleshoot indoor air issues, and verify conditions over time during inspections or monitoring routines. - IDEAL FOR AIR QUALITY AND STORAGE CONTROL – Perfect for maintaining proper environmental conditions in offices, greenhouses, labs, warehouses, and sensitive storage areas where stable humidity and temperature are crucial. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00023RVR0 | | Battery Description | Alkaline | | Best Sellers Rank | #94,230 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in Humidifier Humidity Meters #91 in Humidifier Accessories | | Brand | Extech | | Brand Name | Extech | | Color | green | | Customer Reviews | 4.6 out of 5 stars 236 Reviews | | Global Trade Identification Number | 00793950455807 | | Included Components | 445580, pocket clip, 2023 button battery | | Item Dimensions W x H | 1.2"W x 1"H | | Item Weight | 0.07 Kilograms | | Lower Temperature Rating | 14 Degrees Fahrenheit | | LowerTemperature Range | 14 Degrees Fahrenheit | | Manufacturer | Extech | | Model | 445580 | | Mounting Type | Tabletop | | Operating Humidity | 5% - 95% relative humidity | | Part Number | 445580 | | Product Dimensions | 1.2"W x 1"H | | Smart Home Compatibility | Not Smart Home Compatible | | Temperature Accuracy | 1 degree Celsius | | Temperature Reading Accuracy | plus_minus_1_point_8_degrees_celsius | | UPC | 793950455807 013227082940 799891859544 885117593696 705554395052 013161017268 | | Unit Count | 1.0 Count | | Upper Temperature Range | 122 Degrees Fahrenheit | | Voltage | 3 Volts | | Warranty Description | 1 year | ## Product Details - **Battery Description:** Alkaline - **Brand:** Extech - **Color:** green - **Item Weight:** 0.07 Kilograms - **Product Dimensions:** 1.2"W x 1"H ## Images ![- Extech 445580 Humidity and Temperature Pen with Fast Response Sensor, Min/Max Memory, Dual LCD, Pocket-Sized Hygrometer for HVAC, Labs, Storage Rooms, Indoor Air Monitoring - Image 1](https://m.media-amazon.com/images/I/71IN4BwC-6L.jpg) ![- Extech 445580 Humidity and Temperature Pen with Fast Response Sensor, Min/Max Memory, Dual LCD, Pocket-Sized Hygrometer for HVAC, Labs, Storage Rooms, Indoor Air Monitoring - Image 2](https://m.media-amazon.com/images/I/71SrfOT4HEL.jpg) ![- Extech 445580 Humidity and Temperature Pen with Fast Response Sensor, Min/Max Memory, Dual LCD, Pocket-Sized Hygrometer for HVAC, Labs, Storage Rooms, Indoor Air Monitoring - Image 3](https://m.media-amazon.com/images/I/91-uXjGyVVL.jpg) ![- Extech 445580 Humidity and Temperature Pen with Fast Response Sensor, Min/Max Memory, Dual LCD, Pocket-Sized Hygrometer for HVAC, Labs, Storage Rooms, Indoor Air Monitoring - Image 4](https://m.media-amazon.com/images/I/71MeOXoBFjL.jpg) ![- Extech 445580 Humidity and Temperature Pen with Fast Response Sensor, Min/Max Memory, Dual LCD, Pocket-Sized Hygrometer for HVAC, Labs, Storage Rooms, Indoor Air Monitoring - Image 5](https://m.media-amazon.com/images/I/61FMqReX82L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***H on August 10, 2023* ### ⭐⭐⭐⭐⭐ Review *by D***D on November 29, 2016* ### ⭐⭐⭐⭐⭐ Review *by T***1 on June 8, 2025* ## Frequently Bought Together - Extech 445580 Humidity and Temperature Pen Sized Meter with Pocket Clip - Protimeter BLD5365 Surveymaster Moisture Meter - FLIR C5 Compact Thermal Imaging Camera with WiFi: High Resolution Infrared Imager for Inspection, Electrical/Mechanical, Building, and HVAC Applications --- ## 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.pt/products/2175292-extech-445580-humidity-and-temperature-pen-with-fast-response-sensor](https://www.desertcart.pt/products/2175292-extech-445580-humidity-and-temperature-pen-with-fast-response-sensor) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-12*