--- product_id: 10948228 title: "Extech 407744 94 dB Sound Level Calibrator - 1 kHz Sine Wave for 0.5″ & 1″ Mics, ±0.5 dB Accuracy, Rugged Aluminum Housing, Battery-Test LED, IEC 60942 Certified" price: "AR$1243916" currency: ARS in_stock: true reviews_count: 4 url: https://www.desertcart.com.ar/products/10948228-extech-407744-94-db-sound-level-calibrator-1-khz-sine store_origin: AR region: Argentina --- # 94 dB precision output ±0.5 dB accuracy Rugged aluminum housing Extech 407744 94 dB Sound Level Calibrator - 1 kHz Sine Wave for 0.5″ & 1″ Mics, ±0.5 dB Accuracy, Rugged Aluminum Housing, Battery-Test LED, IEC 60942 Certified **Price:** AR$1243916 **Availability:** ✅ In Stock ## Summary > 🎯 Calibrate like a pro, wherever precision meets durability. ## Quick Answers - **What is this?** Extech 407744 94 dB Sound Level Calibrator - 1 kHz Sine Wave for 0.5″ & 1″ Mics, ±0.5 dB Accuracy, Rugged Aluminum Housing, Battery-Test LED, IEC 60942 Certified - **How much does it cost?** AR$1243916 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/10948228-extech-407744-94-db-sound-level-calibrator-1-khz-sine) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision You Can Trust:** Delivers a stable 1 kHz sine wave at 94 dB with ±0.5 dB accuracy for flawless sound meter calibration. - • **Battery Life at a Glance:** Integrated battery-test LED ensures you never get caught with a dead 9V battery mid-calibration. - • **Built to Brave the Field:** Durable die-cast aluminum housing designed to withstand industrial and lab environments without compromise. - • **All-in-One Calibration Kit:** Comes complete with batteries, screwdriver, and carrying case—ready to go wherever your work takes you. - • **Universal Mic Compatibility:** Seamlessly calibrates both 0.5″ and 1″ microphones, perfect for pros and enthusiasts alike. ## Overview The Extech 407744 Sound Level Calibrator generates a precise 94 dB, 1 kHz sine wave with ±0.5 dB accuracy, compatible with 0.5″ and 1″ microphones. Housed in rugged die-cast aluminum, it features a battery-test LED and meets IEC 60942 standards. Complete with batteries, screwdriver, and carrying case, it’s engineered for reliable field and lab calibration. ## Description From the Manufacturer 1kHz 94dB professional sound calibrator for 0.5" or 1.0" microphones calibrates and verifies sound level meter operation. Battery test position with battery status LED indicates if battery is good. Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB to an accuracy of 5% (frequency) and ±0.5dB (94dB). Meets IEC standard 60942 1997-11and comes complete with two 9V batteries, carrying case, and screwdriver. Review: Not a good system - This whole Extech system is bad. Sound monitor burns through batteries, turns off on its own, doesn’t save data. Review: I need the certification of calibration of this calibrator please answer me - I need the certificationof this calibrator I really need it, it doesnt come with the product. I first buy this product to calibrate my Extech HD600 but I realized that this item doesnt come with a calibration certificate that I need to present for a project, without this its is useless. ## Features - Precision Calibration - Generates a 94 dB sine wave at 1 kHz (±0.5 dB accuracy, ±5 % frequency) to ensure sound level meters read accurately. - Solid & Durable Design - Built with a die-cast aluminum housing that's rugged enough for field, industrial, or lab use. - Built-in Battery Status Check - Slide to "Battery Test" to see if your 9V batteries are good via the status LED, ensuring calibration is always reliable. - Universal Microphone Compatibility - Works with 0.5″ or 1″ microphones, making it ideal for professionals and hobbyists alike - Complete Calibration Kit - Includes two 9V batteries, screwdriver, and carrying case—everything needed for convenient setup and use. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 3.4 out of 5 stars 10 Reviews | ## Images ![Extech 407744 94 dB Sound Level Calibrator - 1 kHz Sine Wave for 0.5″ & 1″ Mics, ±0.5 dB Accuracy, Rugged Aluminum Housing, Battery-Test LED, IEC 60942 Certified - Image 1](https://m.media-amazon.com/images/I/71tqJkXE-+L.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐ Not a good system *by H***. on July 27, 2025* This whole Extech system is bad. Sound monitor burns through batteries, turns off on its own, doesn’t save data. ### ⭐⭐⭐⭐⭐ I need the certification of calibration of this calibrator please answer me *by G***L on August 10, 2012* I need the certificationof this calibrator I really need it, it doesnt come with the product. I first buy this product to calibrate my Extech HD600 but I realized that this item doesnt come with a calibration certificate that I need to present for a project, without this its is useless. ### ⭐ No funciona correctamente *by A***R on June 4, 2022* Entrega un nivel de sonido de 95.2 dB SPL y no de 94.0 dB SPL como deberia hacerlo de acuerdo a las especificaciones ## Frequently Bought Together - Extech 407744 94dB Sound Calibrator for 0.5" and 1" Microphones - Extech SL400 Personal Noise Dosimeter with USB Interface --- ## 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.com.ar/products/10948228-extech-407744-94-db-sound-level-calibrator-1-khz-sine](https://www.desertcart.com.ar/products/10948228-extech-407744-94-db-sound-level-calibrator-1-khz-sine) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-22*