---
product_id: 625433593
title: "H2S Detector Hydrogen Sulfide Monitor Portable Sound and Flash Alarm h2s Gas Monitor for Safety and Environmental Monitoring"
brand: "gain express"
price: "¥33157"
currency: JPY
in_stock: true
reviews_count: 5
category: "Gain Express"
url: https://www.desertcart.jp/products/625433593-h2s-detector-hydrogen-sulfide-monitor-portable-sound-and-flash-alarm
store_origin: JP
region: Japan
---

# 0-100 ppm detection range Battery power indicator Adjustable high/low alarm thresholds H2S Detector Hydrogen Sulfide Monitor Portable Sound and Flash Alarm h2s Gas Monitor for Safety and Environmental Monitoring

**Brand:** gain express
**Price:** ¥33157
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay Ahead of Danger — Detect H2S Before It Detects You!

## Quick Answers

- **What is this?** H2S Detector Hydrogen Sulfide Monitor Portable Sound and Flash Alarm h2s Gas Monitor for Safety and Environmental Monitoring by gain express
- **How much does it cost?** ¥33157 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/625433593-h2s-detector-hydrogen-sulfide-monitor-portable-sound-and-flash-alarm)

## 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

- • **Portable Powerhouse:** Compact handheld design with battery power indicator ensures you’re always ready to monitor on the go.
- • **Smart Safety Shutdown:** Automatic power-off feature (can be disabled) conserves battery life without sacrificing readiness.
- • **Multi-Unit Flexibility:** Switch easily between %VOL, %LEL, PPM, and mg/m³ units to match your professional monitoring needs.
- • **Customizable Alerts, Total Control:** Set your own high/low alarm thresholds and toggle buzzer alarms to fit your environment and peace of mind.
- • **Precision Detection, Zero Compromise:** Detects hydrogen sulfide from 0 to 100 ppm with ultra-sensitive electrochemical sensor for real-time safety assurance.

## Overview

The Gain Express H2S Detector is a portable, handheld hydrogen sulfide gas monitor featuring an electrochemical sensor with a detection range of 0 to 100 ppm. It offers adjustable alarm thresholds, multiple unit displays, a battery power indicator, and an automatic power-off function, making it an essential tool for professionals prioritizing safety and environmental monitoring.

## Description

H2S Detector Hydrogen Sulfide Monitor Portable Sound and Flash Alarm h2s Gas Monitor for Safety and Environmental Monitoring : desertcart.in: Industrial & Scientific

Review: Like the fact that the monitor came with a case to use to store in between jobs.
Review: 特に問題なく使用は出来ました。出来れば、センサー部分が下に伸ばせると良いのかと思います。

## Features

- MEASUREMENT RANGE: 0 to 100ppm0; 0.01VOL%; 1 to 152 mg/M³; 0 to 0.23LEL% with 500ppm maximum overload
- FEATURES: Automatic Power OFF(Can be Disabled); Switchable hydrogen sulfide units (%VOL; %LEL; PPM; mg/M³); battery power indicator; buzzer alarm on/off; high/low alarm threshold adjustable
- KEEP YOUR SAFE: Hydrogen Sulfide Detector Monitor helps to detect the presence of harmful gases in the air; making sure you and your loved ones are always safe
- DESIGN: Handheld compact and portable with Electrochemical H₂S sensor and it has calibration function
- With our hydrogen sulfide detector monitor; you can have peace of mind knowing that you and your family are breathing clean and safe air; free from harmful gases

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BZCC1PCR |
| Alarm | Audible |
| Best Sellers Rank | #240,054 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #500 in Indoor Air Quality Meters |
| Brand | GAIN EXPRESS |
| Colour | red |
| Item Weight | 658 g |
| Item model number | AQM-338 |
| Manufacturer | Gain Express Holdings Ltd |
| Net Quantity | 1.0 Count |
| Number of Items | 1 |
| Operating Humidity | 95 percent |
| Power Source | Battery Powered |
| Product Dimensions | 6.4D x 19.8W x 27.4H Centimeters |
| Sensor Type | Electrochemical |
| Style | Safety |

## Product Details

- **Alarm:** Audible
- **Brand:** GAIN EXPRESS
- **Colour:** red
- **Item Weight:** 1.45 Pounds
- **Number of Items:** 1
- **Operating Humidity:** 95 percent
- **Power Source:** Battery Powered
- **Product Dimensions:** 6.4D x 19.8W x 27.4H Centimeters
- **Sensor Type:** Electrochemical
- **Style:** Safety

## Images

![H2S Detector Hydrogen Sulfide Monitor Portable Sound and Flash Alarm h2s Gas Monitor for Safety and Environmental Monitoring - Image 1](https://m.media-amazon.com/images/I/61zBLKauK6L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by F***O on 11 May 2024*

Like the fact that the monitor came with a case to use to store in between jobs.

### ⭐⭐⭐⭐⭐ Review
*by 鈴***之 on 3 September 2025*

特に問題なく使用は出来ました。出来れば、センサー部分が下に伸ばせると良いのかと思います。

### ⭐ Review
*by A***R on 10 May 2024*

Not what I expected

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.jp/products/625433593-h2s-detector-hydrogen-sulfide-monitor-portable-sound-and-flash-alarm](https://www.desertcart.jp/products/625433593-h2s-detector-hydrogen-sulfide-monitor-portable-sound-and-flash-alarm)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-04*