---
product_id: 675426668
title: "DS-399 Portable Carbon Monoxide Detector, 168H Standby, Rechargeable 3-in-1 CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent"
brand: "gasdoc"
price: "¥11917"
currency: JPY
in_stock: true
reviews_count: 13
category: "Gas Doc"
url: https://www.desertcart.jp/products/675426668-ds-399-portable-carbon-monoxide-detector-168h-standby-rechargeable-3
store_origin: JP
region: Japan
---

# 168H rechargeable battery life Compact palm-sized design Dual audible & visual alarms DS-399 Portable Carbon Monoxide Detector, 168H Standby, Rechargeable 3-in-1 CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent

**Brand:** gasdoc
**Price:** ¥11917
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay Ahead of Danger with the DS-399 — Safety That Travels With You!

## Quick Answers

- **What is this?** DS-399 Portable Carbon Monoxide Detector, 168H Standby, Rechargeable 3-in-1 CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent by gasdoc
- **How much does it cost?** ¥11917 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/675426668-ds-399-portable-carbon-monoxide-detector-168h-standby-rechargeable-3)

## Best For

- gasdoc enthusiasts

## Why This Product

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

## Key Features

- • **Power That Lasts:** Rechargeable Type-C battery delivers up to 168 hours of continuous protection—no frequent charging hassles.
- • **Travel-Ready Portability:** Ultra-compact, lightweight design fits in your pocket or attaches easily to luggage with included lanyard.
- • **Unmatched Safety On-the-Go:** Detects CO levels from 0 to 1000 PPM with customizable alarm thresholds for early warnings.
- • **Smart Environmental Monitoring:** Real-time temperature and humidity tracking adds an extra layer of situational awareness.
- • **Clear Alerts, Double Protection:** Loud audible alarms paired with color-changing visual indicators ensure you never miss a danger signal.

## Overview

The GasDoc DS-399 is a sleek, rechargeable 3-in-1 carbon monoxide detector designed for home, car, and outdoor use. It features a sensitive CO sensor with customizable alarm thresholds, real-time temperature and humidity monitoring, and dual audible-visual alerts. Compact and lightweight, it offers up to 168 hours of continuous use on a single Type-C charge, making it an essential safety companion for travelers and outdoor enthusiasts alike.

## Description

GasDoc DS-399 Portable Carbon Monoxide Detector, 168H Standby, Rechargeable 3-in-1 CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent - desertcart.com

Review: Just the ticket! - This is a nice little unit! I use it in my canvas hot tent to be safe with my wood burning stove. The thermometer is accurate and a fun addition for recording how ridiculously hot my tent gets and how cold when the stove goes out. The gentle lights come on even when you just bump it. Handy for night time reading. It’s alarm went off once when I accidentally allowed a large influx off wood smoke. It’s loud and effective. I have watched it measure lesser amounts of smoke and carbon monoxide. It seems both sensitive and precise. It holds a charge for a long time even in severe cold. All in all a much higher quality device than I was expecting. Highly recommended!
Review: Must-have when traveling outside US. - We bought this in advance of an international trip. We know someone whose child died asleep in a hotel while traveling due to carbon monoxide poisoning. I tried it next to the gas stove (natural gas) and over a lit match with no response. I tested it near the car exhaust and it went off right away. I am grateful that such an inexpensive monitor will provide an extra layer of safety when traveling outside the US. Im able to charge it using my phone charger (it came with its own cord, but I love that its easy to charge with an existing cord).

## Features

- Carbon Monoxide Detector: The DS-399 Portable Carbon Monoxide Detector can detect CO levels ranging from 0 to 1000 PPM. It also allows you to set custom alarm thresholds for even earlier detection, ensuring your safety. In addition, the CO meter monitors temperature and humidity in real time, delivering accurate environmental readings
- Powerful Rechargeable Battery: Featuring a powerful battery, this CO alarm is equipped with Type-C charging capability, ensuring minimal downtime. A full charge provides up to 168 hours of continuous use, making it a reliable choice for long trips and extended outdoor stays
- Easy to Carry: This handheld CO meter is designed to be extremely compact, roughly the size of your palm. Its small size makes it easy to carry, whether tucked in your pocket or attached to your luggage using the included lanyard. Its portability ensures that safety is always within reach during your travels
- Audio-visual Alarm: The detector allows you to set custom CO alarm thresholds. When the gas concentration exceeds the set alarm threshold, the device emits an audible alarm, and the ring indicator light below the screen changes color based on the alert level. This dual alert system offers double protection for your safety
- What You Get: You will receive DS-399 Carbon Monoxide Detector, Type - C Cable, Lanyard, User Manual—ready to use immediately

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DGG8FBC1 |
| Alarm | Audible, Visual |
| Batteries | 1 C batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Ion |
| Best Sellers Rank | #4,527 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #21 in Carbon Monoxide Detectors |
| Brand | GasDoc |
| Color | Dark Blue |
| Customer Reviews | 4.3 4.3 out of 5 stars (472) |
| Date First Available | November 8, 2024 |
| Item Weight | 2.71 ounces |
| Item model number | DS-399 |
| Manufacturer | GasDoc |
| Part Number | DS-399 |
| Power Source | Battery Powered |
| Product Dimensions | 4.13 x 0.83 x 1.97 inches |
| Style | 3-in-1 CO Detector |

## Product Details

- **Alarm:** Audible, Visual
- **Brand:** GasDoc
- **Color:** Dark Blue
- **Item Weight:** 76.8 Grams
- **Manufacturer:** GasDoc
- **Power Source:** Battery Powered
- **Style:** 3-in-1 CO Detector

## Images

![DS-399 Portable Carbon Monoxide Detector, 168H Standby, Rechargeable 3-in-1 CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent - Image 1](https://m.media-amazon.com/images/I/61oK3uEOcEL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just the ticket!
*by A***L on December 13, 2025*

This is a nice little unit! I use it in my canvas hot tent to be safe with my wood burning stove. The thermometer is accurate and a fun addition for recording how ridiculously hot my tent gets and how cold when the stove goes out. The gentle lights come on even when you just bump it. Handy for night time reading. It’s alarm went off once when I accidentally allowed a large influx off wood smoke. It’s loud and effective. I have watched it measure lesser amounts of smoke and carbon monoxide. It seems both sensitive and precise. It holds a charge for a long time even in severe cold. All in all a much higher quality device than I was expecting. Highly recommended!

### ⭐⭐⭐⭐⭐ Must-have when traveling outside US.
*by S***8 on September 1, 2025*

We bought this in advance of an international trip. We know someone whose child died asleep in a hotel while traveling due to carbon monoxide poisoning. I tried it next to the gas stove (natural gas) and over a lit match with no response. I tested it near the car exhaust and it went off right away. I am grateful that such an inexpensive monitor will provide an extra layer of safety when traveling outside the US. Im able to charge it using my phone charger (it came with its own cord, but I love that its easy to charge with an existing cord).

### ⭐⭐⭐⭐⭐ Very good CO2 meter
*by A***R on February 13, 2026*

Most accurate CO2 meter I’ve found so far, and highly portable and easy to charge. It turns out CO2 levels have real effects on people, in homes, offices, classrooms, and vehicles. Lots of studies have shown this. As a society, we’ve done a great job of making more of these spaces energy efficient. But often, it's done at the expense of fresh air, which our bodies and brains genuinely need. Studies have found that different ranges of CO2 have measurable impacts on human performance, even in schools, driving, offices, everywhere. This device helps with knowing when to open windows (and when it’s okay to close them again), even if you’ve been trained to ignore your body’s cravings for fresh air (as school, work, and high utility bills have trained many of us to do).

## Frequently Bought Together

- GasDoc DS-399 Carbon Monoxide Detector, 168HR Standby, Rechargeable 3-in-1 Portable CO Detector with Audible & Visual Alerts for Travel & Camping, CO Meter for Home, Car & Tent - Dark Blue
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**Shop now:** [https://www.desertcart.jp/products/675426668-ds-399-portable-carbon-monoxide-detector-168h-standby-rechargeable-3](https://www.desertcart.jp/products/675426668-ds-399-portable-carbon-monoxide-detector-168h-standby-rechargeable-3)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-10*