--- product_id: 269852632 title: "HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter" brand: "hm digital" price: "€ 105.64" currency: EUR in_stock: true reviews_count: 8 category: "Hm Digital" url: https://www.desertcart.be/products/269852632-hm-digital-hmdcom100-waterproof-ec-tds-and-amp-temperature-combo store_origin: BE region: Belgium --- # Measures EC, TDS & Temp Combo IP67 Waterproof Housing 0.5s Fast Response Time HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter **Brand:** hm digital **Price:** € 105.64 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead in water quality—because precision waits for no one! ## Quick Answers - **What is this?** HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter by hm digital - **How much does it cost?** € 105.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/269852632-hm-digital-hmdcom100-waterproof-ec-tds-and-amp-temperature-combo) ## 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 - • **Speed Meets Clarity:** Instant 0.5-second response time with a large digital display ensures you never miss a critical measurement. - • **Precision in Every Drop:** High-accuracy readings across four scales (µS, mS, ppm, ppt) keep your water quality insights sharp and reliable. - • **Versatile Conversion Power:** Three nonlinear EC to TDS conversion factors (KCl, 442TM, NaCl) tailor your data to exact standards. - • **Built to Brave the Elements:** IP67-rated waterproof design means no fear of spills, splashes, or outdoor testing challenges. - • **Endurance for Professionals:** Up to 100 hours of battery life with low battery indicator keeps your workflow uninterrupted. ## Overview The HMDCOM100 is a professional-grade waterproof EC/TDS/Temperature combo meter featuring IP67 protection, rapid 0.5-second readings, and versatile measurement scales. Designed for demanding water quality testing in labs, aquaculture, pools, and more, it offers high accuracy, a large digital display, and up to 100 hours of battery life, making it the go-to tool for millennial professionals who demand precision and durability in every drop. ## Description Product description: HM Digital's COM-100 is a waterproof combination EC/TDS/Temperature meter that is ideal for all water quality testing, water purification applications, drinking water, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more. The COM-100 is a professional level EC/TDS meter at an unbeatable price. ## 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 | | Additional Features | High Accuracy, Large Display, Waterproof, Low Battery Indicator | | Age Range Description | Adult | | Age range (description) | Adult | | Battery Life | 100 Hours | | Brand | HM Digital | | Brand Name | HM Digital | | Color | White/Purple | | Colour | White/Purple | | Customer Reviews | 4.2 out of 5 stars 172 Reviews | | Display Type | Digital | | Global Trade Identification Number | 00891144000007 | | Immersion Depth | 1 Meters | | Included Components | HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter | | Included components | HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter | | Indoor Outdoor Usage | Outdoor | | Item Length | 8.9 Inches | | Item Type Name | HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter | | Item Weight | 120 Grams | | Manufacturer | HM Digital | | Model | COM-100 | | Model Name | HMDCOM100 | | Number of Batteries | 1 A batteries required. | | Outer Material | Plastic | | Outer material | Plastic | | Part Number | COM-100 | | Power Source | Battery Powered | | Product Care Instructions | Wipe Clean | | Resolution | 0.1 degree fahrenheit | | Response Time | 0.5 seconds | | Reusability | Rechargeable | | Smart Home Compatibility | Not Smart Home Compatible | | Special features | High Accuracy, Large Display, Waterproof, Low Battery Indicator | | Specification Met | UL | | Style Name | Contemporary | | UPC | 095225177507 891144000007 | | Unit Count | 1 Count | | Upper Temperature Range | 80 Degrees Celsius | ## Product Details - **Age range (description):** Adult - **Brand:** HM Digital - **Colour:** White/Purple - **Included components:** HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter - **Special features:** High Accuracy, Large Display, Waterproof, Low Battery Indicator ## Images ![HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter - Image 1](https://m.media-amazon.com/images/I/51hfD5nFZmL.jpg) ## Questions & Answers **Q: Can this unit be used to test PH?** A: FROM HM DIGITAL: The COM-100 is NOT a pH meter. It measures EC (electrical conductivity), TDS (total dissolved solids) and temperature. For pH, please purchase HM Digital's PH-200. For more information, please visit www.tdsmeter.com **Q: My meter want read over 999 or am I looking at the wrong ppm?** A: Select 442 scale. Your meter will read more than 999 ppm. **Q: Any trouble measuring in mS?** A: FROM HM-DIGITAL: The COM-100 is a professional waterproof EC/TDS meter that has three EC-TDS conversion factors and selectable modes allowing you to measure in the µs, mS, ppm and ppt scales. For more information, please visit, www.tdsmeter.com/products/com100.html **Q: Isn't one supposed to use calibrating and cleaning solution with this?** A: I clean mine with a wet Q-tip. There is a TDS calibration solution I use when I recalibrate every month. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***S on 18 April 2026* ### ⭐⭐⭐⭐⭐ Review *by S***L on 24 March 2020* ### ⭐⭐⭐⭐⭐ Review *by A***H on 17 March 2024* ## 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.be/products/269852632-hm-digital-hmdcom100-waterproof-ec-tds-and-amp-temperature-combo](https://www.desertcart.be/products/269852632-hm-digital-hmdcom100-waterproof-ec-tds-and-amp-temperature-combo) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-08*