---
product_id: 425272324
title: "GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory"
brand: "gain express"
price: "€ 73.59"
currency: EUR
in_stock: true
reviews_count: 5
category: "Gain Express"
url: https://www.desertcart.be/products/425272324-gain-express-digital-combo-ph-and-temperature-meter-aquarium-thermometer
store_origin: BE
region: Belgium
---

# ±0.1 pH accuracy 3-month battery life ATC temp compensation GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory

**Brand:** gain express
**Price:** € 73.59
**Availability:** ✅ In Stock

## Summary

> 🌊 Stay ahead of your tank’s health with precision and ease!

## Quick Answers

- **What is this?** GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory by gain express
- **How much does it cost?** € 73.59 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/425272324-gain-express-digital-combo-ph-and-temperature-meter-aquarium-thermometer)

## Best For

- gain express enthusiasts

## Why This Product

- Trusted gain express brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Screen for Any Lighting:** Large LCD with green backlight ensures effortless monitoring day or night.
- • **Long-Lasting, Energy-Savvy Design:** Runs on 4 AA batteries with power-saving mode delivering up to 3 months of uninterrupted use.
- • **Temperature-Compensated Confidence:** Automatic Temperature Compensation (ATC) neutralizes temp fluctuations for reliable pH data.
- • **Precision that Powers Your Aquarium:** Ultra-accurate ±0.1 pH and ±0.5°C readings keep your aquatic environment flawless.
- • **Effortless Calibration, Zero Guesswork:** One-touch, 3-point auto calibration with buffer recognition guarantees error-free results.

## Overview

The GAIN EXPRESS Digital Combo pH & Temperature Meter is a professional-grade tool designed for precise monitoring of aquatic environments. Featuring a large backlit LCD, automatic temperature compensation, and a 3-point auto calibration system, it delivers highly accurate pH (±0.1) and temperature (±0.5°C) readings. Powered by 4 AA batteries with a 3-month lifespan and equipped with a replaceable pH probe, this compact device is ideal for fish tanks, hydroponics, and aquaculture labs seeking reliable, user-friendly water quality management.

## Description

This new device is designed to accurately monitor the pH and Temperature of your fish tank. It comes with a temperature probe and a pH probe. The temperature probe is permanently fitted to the Meter,whereas the pH probe is replaceable.It is equipped with Automatic Temperature Compensation (ATC), so temperature change can't affect on pH level measurementFeatures:Large LCD display with smart backlight designCompact size with ATC functionReplaceable BNC pH ElectrodeAccurate pH and Temperature readingLow battery indicatorSwitchable °C/°F temperature unitBattery operated with power saving modeUp to three points PH calibrationOne touch button for calibrationFactory Pre-calibratedSpecifications:pH Measurement Range: 0.0~14.0pHAccuracy: ±0.1Resolution: 0.01Temperature Measurement Range: -5.0~60.0°C (23~140°F)Accuracy: ±0.5°CResolution: 0.1LCD Size: 26 x 44mmBacklight: Green backlightpH Calibration: pH 4.01 / pH 7.0 / pH 10.01 three points auto calibrationOperating Environment: 0~50°C; 80% RHStorage Environment: -10~50°C; 90% RHDimension: 90 x 63 x 31mmBattery: 4 x AA Alkaline BatterySet Includes:1 x pH &Temperature monitor with built-in Temp Probe1 x Replaceable pH Probe4 x AA Alkaline Battery3 x Calibration Buffer Powder (pH 7.0 / pH 4.01 / pH 10.01)2 x Wall mount hanger and nylon screwEnglish Operation ManualStandard Factory Packaging

Review: Works great. - I’m using this in a hydroponic setup. It works great. One difficult thing is measuring out the calibration solutions. I have access to a lab, with scales and distilled water, but I don’t know how others would do this easily. The unit performs very well. Initial calibration is important to get accurate pH readings. But once you set it up, you don’t need to recalibrate often. The only time I needed to recalibrate was when I forgot to store the probe in the solution. Important: you never want to store the pH probe dry. It will become Un-calibrated and lose proper function if done repeatedly. Overall, it’s a really nice pH probe at a reasonable cost.
Review: pH-mètre - Conforme à mes besoins

## Features

- FEATURES: Large screen monitor with smart backlight which allows you to read easily even in dark sorroundings. pH and Temperature display with low battery indicator and the unit operates power saving mode.
- Multi-points Calibration: Up to 3 Points PH calibration (pH 7.0 / pH 4.01 / pH 10.01). It has advance one touch calibration function with automatic buffer recognition to avoid errors.
- ATC (Automatic Temperature Compensation): The monitor has ATC function so it will decrease the error of PH readings caused by the fluctuation of water temperature.
- HIGHLY ACCURATE MEASUREMENT: It has separate probe. When taking a measurement, simply place your probes into the solution and and then the accurate readings will be displayed on screen.
- POWER SOURCE: The monitor is operated with 4 x AA Alkaline Battery. It will go into power saving mode after around 5 minutes. In this way, it can provide battery life time for at least 3 months.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08RYJ48X8 |
| Additional Features | High Accuracy, Low Battery Indicator |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Battery Life | 3 months |
| Brand | GAIN EXPRESS |
| Brand Name | GAIN EXPRESS |
| Color | pH&Temp Monitor(Upgraded) |
| Colour | pH&Temp Monitor(Upgraded) |
| Customer Reviews | 4.1 out of 5 stars 476 Reviews |
| Display Type | LCD |
| Included Components | Battery |
| Included components | Battery |
| Indoor Outdoor Usage | Indoor |
| Item Length | 9 Centimeters |
| Manufacturer | Gain Express Holdings Ltd |
| Model | PHM-295 |
| Model Name | PHM-295 |
| Number of Batteries | 4 AA batteries required. |
| Outer Material | Plastic |
| Outer material | Plastic |
| Part Number | PHM-295 |
| Power Source | Battery Powered |
| Product Care Instructions | Wipe Clean |
| Resolution | 0.1 degree fahrenheit |
| Response Time | 5 minutes |
| Reusability | Reusable |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special features | High Accuracy, Low Battery Indicator |
| Specification Met | View manual |
| Style Name | Contemporary |
| UPC | 600316551403 713072686217 |
| Unit Count | 1 Count |
| Upper Temperature Range | 60 Degrees Celsius |

## Product Details

- **Brand:** GAIN EXPRESS
- **Special features:** High Accuracy, Low Battery Indicator
- **Colour:** pH&Temp Monitor(Upgraded)
- **Age range (description):** Adult
- **Included components:** Battery

## Images

![GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory - Image 1](https://m.media-amazon.com/images/I/61OwPb6zhYL.jpg)
![GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory - Image 2](https://m.media-amazon.com/images/I/71xo3djgubL.jpg)
![GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory - Image 3](https://m.media-amazon.com/images/I/71Q4914EVeL.jpg)
![GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory - Image 4](https://m.media-amazon.com/images/I/61BKIFiftCL.jpg)
![GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory - Image 5](https://m.media-amazon.com/images/I/61w6AACELuL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great.
*by N***K on 1 July 2022*

I’m using this in a hydroponic setup. It works great. One difficult thing is measuring out the calibration solutions. I have access to a lab, with scales and distilled water, but I don’t know how others would do this easily. The unit performs very well. Initial calibration is important to get accurate pH readings. But once you set it up, you don’t need to recalibrate often. The only time I needed to recalibrate was when I forgot to store the probe in the solution. Important: you never want to store the pH probe dry. It will become Un-calibrated and lose proper function if done repeatedly. Overall, it’s a really nice pH probe at a reasonable cost.

### ⭐⭐⭐⭐⭐ pH-mètre
*by L***. on 2 July 2025*

Conforme à mes besoins

### ⭐⭐⭐⭐⭐ HIGHLY RECOMMEND!!
*by D***4 on 1 January 2026*

Love it

## Frequently Bought Together

- Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory
- General Hydroponics pH Control Kit For A Balanced Nutrient Solution

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-25*