---
product_id: 277298453
title: "HM Digital TDS-4TM Meter with Digital Thermometer"
brand: "hm digital"
price: "₨24225"
currency: LKR
in_stock: false
url: https://www.desertcart.lk/products/277298453-hm-digital-tds-4tm-meter-with-digital-thermometer
store_origin: LK
region: Sri Lanka
---

# Water Resistant Housing TDS Range: 0-9990 ppm Battery Powered HM Digital TDS-4TM Meter with Digital Thermometer

**Brand:** hm digital
**Price:** ₨24225
**Availability:** ❌ Out of Stock

## Summary

> 💧 Dive into Quality: Measure Your Water Like a Pro!

## Quick Answers

- **What is this?** HM Digital TDS-4TM Meter with Digital Thermometer by hm digital
- **How much does it cost?** ₨24225 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/277298453-hm-digital-tds-4tm-meter-with-digital-thermometer)

## 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

- • **Compact & Portable:** Lightweight design (100g) makes it easy to carry, ensuring you can monitor water quality wherever you go.
- • **Convenient Functions:** Includes hold and auto-off functions to save battery life and enhance usability.
- • **User-Friendly Design:** Features a clear LCD display for easy reading, making it perfect for both home and commercial use.
- • **Precision Measurement:** Accurately measures TDS levels from 0 to 9990 ppm, ensuring your water quality is always top-notch.
- • **Versatile Applications:** Ideal for aquariums, swimming pools, and RO drinking water systems—your all-in-one water quality solution.

## Overview

The HM Digital TDS-4TM Meter with Digital Thermometer is a versatile and user-friendly device designed for precise TDS measurement in various applications, including aquariums, swimming pools, and drinking water systems. With a measurement range of 0-9990 ppm, a water-resistant housing, and convenient features like hold and auto-off, this compact meter is perfect for both home and commercial use.

## Description

HM Digital TDS-4TM Meter with Digital Thermometer : desertcart.ae: Industrial & Scientific

## Features

- TDS Measurement Range: 0-9990 ppm
- Hold and Auto-off function
- Color:Beige
- Water Resistant Housing
- Commercial amd Home Use,Such As Aquariums, Swimming Pools, RO Drinking Water system, Water Filters, Purifiers and More

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | HM ELECTRONICS |
| Part number | HMDIGITALTDS4 |
| Item Weight | 100 g |
| Product Dimensions | 1.78 x 3.3 x 15.24 cm; 100 g |
| Batteries | 2 LR44 batteries required. (included) |
| Item model number | HM-DIGITAL-TDS-4TM |
| Color | White |
| Power source type | Battery Powered |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Display Style | Lcd |
| Plug Profile | Built-In Mount |
| Specification met | See Manual |
| Special Features | Digital |
| Included components | Battery |
| Batteries Included? | Yes |
| Batteries Required? | Yes |

## Images

![HM Digital TDS-4TM Meter with Digital Thermometer - Image 1](https://m.media-amazon.com/images/I/51kqT3lMMDL._AC_SL1000_.jpg)
![HM Digital TDS-4TM Meter with Digital Thermometer - Image 2](https://m.media-amazon.com/images/I/51kqT3lMMDL._AC_SX679_.jpg)

## Questions & Answers

**Q: how do you calibrate this meter  my water readings r "000" ?**
A: I would go to www.tdsmeter.com/calibration_maintenance.htm select "hand-held testers", then select "TDS-4: Pocket-Size TDS Meter", then in "Features" description, click on the highlighted text "Factory Calibrated:" which will bring you to "Calibration, Care and Maintenance"...just follow the instructions....if you do, you must have a bottle of the 342-ppm calibration solution, a small straight-blade screwdriver and distilled water to do the procedure...fairly straight-forward.

**Q: what size batteries does this take?**
A: 2 - 1.5 volt lithium button batteries.  They come included

**Q: Why is this model tds-4tm  less expensive than the tds-4?  it has the all the tds-4 features including auto temp compensation plus digital thermometer**
A: Not sure why it is less expensive.  The meter is great and measures TDS and temperature fine.  It may be an oversight on the seller's part, or folks may not know about it.  I bought this one specifically because it had the extra temperature feature and was less in price also.  A no brainer!

**Q: Does this meter test for fluoride?**
A: This meter does not test for fluoride.  It only tests for Total Dissolved Solids (TDS) and Temperature (Centigrade only, no Fahrenheit)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-12*