--- product_id: 51747494 title: "COM-100 Waterproof EC/TDS/TEMP Meter" brand: "hm digital" price: "€ 130.05" currency: EUR in_stock: true reviews_count: 8 category: "Hm Digital" url: https://www.desertcart.at/products/51747494-com-100-waterproof-ec-tds-temp-meter store_origin: AT region: Austria --- # Measures EC up to 9990 µS TDS range up to 8560 ppm Temperature accuracy ±2%, range 0-55°C COM-100 Waterproof EC/TDS/TEMP Meter **Brand:** hm digital **Price:** € 130.05 **Availability:** ✅ In Stock ## Summary > 🌟 Stay ahead of the curve with the ultimate waterproof EC/TDS/Temp meter! ## Quick Answers - **What is this?** COM-100 Waterproof EC/TDS/TEMP Meter by hm digital - **How much does it cost?** € 130.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/51747494-com-100-waterproof-ec-tds-temp-meter) ## Best For - hm digital enthusiasts ## Why This Product - Trusted hm digital brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Triple-Scale Mastery:** Switch effortlessly between µS, mS, ppm, and ppt for versatile testing. - • **Smart Conversion Tech:** Nonlinear EC-to-TDS factors tailored for KCl, 442TM, and NaCl solutions. - • **User-Friendly Calibration:** Digital push-button calibration—ditch the screwdriver, embrace precision. - • **Precision Meets Portability:** Compact, waterproof IP67 design built for on-the-go pros. - • **Instant Readings, Zero Guesswork:** Fast 0.5-second response with large, easy-to-read digital display. ## Overview The HM Digital COM-100 is a professional-grade, waterproof meter designed to measure electrical conductivity, total dissolved solids, and temperature with high accuracy. Featuring multiple scales and nonlinear conversion factors, it offers versatile, fast readings in a durable IP67-rated housing. Ideal for outdoor and indoor use, it combines precision with user-friendly digital calibration and a clear LCD display, making it a must-have tool for water quality monitoring and environmental professionals. ## Description SPECIFICATIONS -EC Range: 0 - 9990µs; 0 - 9.99 mS -TDS Range: 0 - 8560 ppm (mg/L); 0 - 8.56 ppt -Temperature Range: 0-55 centigrade -Accuracy: +/- 2% -EC to TDS Conversion Factor: Non-linear conversions for KCl, 442TM or NaCl solutions. -Calibration: Digital calibration -Probe: Detachable platinum electrodes> -Power source: 2 x 1.5V AAA Alkaline batteries. Review: Good value purchase - Excellent value, quick delivery Review: Great PPM meter - Worth the money. ## Features - Measures electrical conductivity (EC), total dissolved solids (TDS), and temperature - Four scales: µS, mS, ppm, ppt (mS and ppt are new) - Three different nonlinear ECtoTDS conversion factors (KCl, 442TM, NaCl). - Waterproof housing (IP67 rating) - Measurement Range: 09990 µS; 08560 ppm; 09.99 mS; 08.56 ppt ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0045LQFTK | | Age Range Description | Adult | | Best Sellers Rank | 25,298 in Garden ( See Top 100 in Garden ) 52 in Pool & Hot Tub Testers | | Brand | HM Digital | | Colour | White/Purple | | Country Of Origin | China | | Customer Reviews | 4.2 4.2 out of 5 stars (171) | | Display Type | Digital | | Global Trade Identification Number | 00891144000007 | | Immersion Depth | 1 Metres | | Included Components | HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter | | Indoor Outdoor Usage | Outdoor | | Item Length | 8.9 Inches | | Item Weight | 120 Grams | | Manufacturer | HM Digital | | Manufacturer Part Number | COM-100 | | Model Name | HMDCOM100 | | Model Number | COM-100 | | Number of Batteries | 1 A batteries required. | | Outer Material | Plastic | | Power Source | Battery Powered | | Product Care Instructions | Wipe Clean | | Resolution | 0.1 degree celsius | | Response Time | 0.5 seconds | | Reusability | Rechargeable | | Special Features | Auto-off function, data-hold function and low-battery indicator., Display: large and easy-to-read LCD screen includes simultaneous temperature reading., Factory Calibrated: The COM-100 meter is calibrated with a 1413 µS solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. | | Specification Met | UL | | Style Name | Contemporary | | UPC | 095225177507 891144000007 | | Unit Count | 1 count | | Upper Temperature Rating | 80 Degrees Celsius | ## Product Details - **Age range (description):** Adult - **Brand:** HM Digital - **Colour:** White/Purple - **Display type:** Digital - **Included components:** HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter - **Outer material:** Plastic - **Product care instructions:** Wipe Clean - **Specification met:** UL - **Unit count:** 1 count ## Images ![COM-100 Waterproof EC/TDS/TEMP Meter - Image 1](https://m.media-amazon.com/images/I/51hfD5nFZmL.jpg) ## Questions & Answers **Q: What batteries does it use?** A: Power source: 3 x 1.5V button cell batteries (included) (model LR44 or equivalent) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good value purchase *by A***R on 11 September 2018* Excellent value, quick delivery ### ⭐⭐⭐⭐⭐ Great PPM meter *by A***R on 24 September 2018* Worth the money. ### ⭐⭐⭐⭐ User friendly product! *by M***I on 30 July 2017* Users friendly product! Well made too. I love the fact that it gives readings in European unit : micro Siemens... too! It's accuracy is to 000µS or 00.0 µS and temperature readings 00.0°C The other functions I have not utilized yet! ## Frequently Bought Together - HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter - HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue - HM Digital 1000ppm TDS Calibration Solution --- ## 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.at/products/51747494-com-100-waterproof-ec-tds-temp-meter](https://www.desertcart.at/products/51747494-com-100-waterproof-ec-tds-temp-meter) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-22*