---
product_id: 51747494
title: "HM Digital COM-100 Waterproof EC/TDS/TEMP Meter"
brand: "hm digital"
price: "S$136"
currency: SGD
in_stock: true
reviews_count: 3
category: "Hm Digital"
url: https://www.desertcart.sg/products/51747494-hm-digital-com-100-waterproof-ec-tds-temp-meter
store_origin: SG
region: Singapore
---

# Measures EC & TDS up to 9990 µS & 8560 ppm Accurate temperature readout 0-55°C IP67 Waterproof for rugged outdoor use HM Digital COM-100 Waterproof EC/TDS/TEMP Meter

**Brand:** hm digital
**Price:** S$136
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the curve with precision you can trust — dive into data like a pro!

## Quick Answers

- **What is this?** HM Digital COM-100 Waterproof EC/TDS/TEMP Meter by hm digital
- **How much does it cost?** S$136 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/51747494-hm-digital-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

- • **Precision in Every Drop:** High-accuracy ±2% readings for EC, TDS, and temperature ensure you never miss a detail.
- • **Instant Data at a Glance:** Large LCD screen with simultaneous temperature display, auto-off, data-hold, and low-battery alerts keep you informed and efficient.
- • **Built to Brave the Elements:** IP67-rated waterproof housing means reliable performance rain or shine, poolside or in the field.
- • **Versatile Measurement Modes:** Four scales (µS, mS, ppm, ppt) plus three nonlinear EC-to-TDS conversion factors tailor your testing to any solution.
- • **User-Friendly Digital Calibration:** Recalibrate effortlessly with push-button digital calibration—no screwdriver needed, no hassle.

## Overview

The HM Digital COM-100 is a professional-grade waterproof EC/TDS/Temperature meter designed for precise water quality analysis. Featuring four measurement scales, three nonlinear conversion factors, and a rugged IP67 waterproof design, it delivers fast, accurate readings with ±2% accuracy. Its large LCD screen displays simultaneous temperature data, and digital push-button calibration ensures easy maintenance. Ideal for outdoor and indoor use, this compact, battery-powered device is perfect for professionals demanding reliable, versatile water testing.

## 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 |
| Age range (description) | Adult |
| Best Sellers Rank | 105,340 in Garden ( See Top 100 in Garden ) 329 in Pool & Hot Tub Testers |
| Brand | HM Digital |
| Colour | White/Purple |
| Customer Reviews | 4.3 out of 5 stars 168 Reviews |
| Display Type | Lcd |
| Global Trade Identification Number | 00891144000007 |
| Immersion Depth | 1 Metres |
| 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 Weight | 0.12 Kilograms |
| Manufacturer | HM Digital |
| Model Name | HMDCOM100 |
| Model Number | COM-100 |
| Number of Batteries | 1 A batteries required. |
| Outer Material | Plastic |
| 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. |
| Special feature | 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. Special feature 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. See more |
| Specification Met | UL |
| Style Name | Practical |
| UPC | 095225177507 891144000007 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 80 Degrees Celsius |

## Product Details

- **Brand:** HM Digital
- **Special feature:** 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.
- **Colour:** White/Purple
- **Age range (description):** Adult
- **Included components:** HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter
- **Outer material:** Plastic
- **Specification met:** UL
- **Display type:** Lcd
- **Product care instructions:** Wipe Clean
- **Unit count:** 1 Count

## Images

![HM Digital COM-100 Waterproof EC/TDS/TEMP Meter - Image 1](https://m.media-amazon.com/images/I/51hfD5nFZmL.jpg)
![HM Digital COM-100 Waterproof EC/TDS/TEMP Meter - Image 2](https://m.media-amazon.com/images/I/61IzVp26pKL.jpg)
![HM Digital COM-100 Waterproof EC/TDS/TEMP Meter - Image 3](https://m.media-amazon.com/images/I/61tCsxZirvL.jpg)
![HM Digital COM-100 Waterproof EC/TDS/TEMP Meter - Image 4](https://m.media-amazon.com/images/I/71wQtNYPw7L.jpg)
![HM Digital COM-100 Waterproof EC/TDS/TEMP Meter - Image 5](https://m.media-amazon.com/images/I/71qEIrsAZOL.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.sg/products/51747494-hm-digital-com-100-waterproof-ec-tds-temp-meter](https://www.desertcart.sg/products/51747494-hm-digital-com-100-waterproof-ec-tds-temp-meter)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-27*