---
product_id: 600927207
title: "CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange"
brand: "toptes"
price: "¥19277"
currency: JPY
in_stock: true
category: "Toptes"
url: https://www.desertcart.jp/products/600927207-ct-300-portable-carbon-monoxide-detector-co-detector-with-audible
store_origin: JP
region: Japan
---

# 0-5000 ppm ultra-sensitive range Dual audible & visual alarms 40-hour battery life with auto power-off CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange

**Brand:** toptes
**Price:** ¥19277
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay Ahead of Invisible Danger — Safety That Travels With You

## Quick Answers

- **What is this?** CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange by toptes
- **How much does it cost?** ¥19277 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/600927207-ct-300-portable-carbon-monoxide-detector-co-detector-with-audible)

## Best For

- toptes enthusiasts

## Why This Product

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

## Key Features

- • **Dual Alarm System:** Visual color-changing screen plus loud audible alerts ensure you never miss a dangerous CO spike.
- • **Backlit LCD Display:** Clear, easy-to-read screen even in dim environments keeps you informed anytime, anywhere.
- • **Portable & Durable Design:** Compact, anti-slip ABS/PC casing built for home, car, camping, and travel—safety wherever you go.
- • **Swift & Precise CO Detection:** Electrochemical sensor delivers rapid, accurate readings from 0 to 5000 ppm—early warnings that save lives.
- • **User-Friendly Power Management:** 40 hours runtime with low-battery alerts and automatic shutoff to maximize battery efficiency.

## Overview

The TopTes CT-300 is a portable carbon monoxide detector featuring an advanced electrochemical sensor with a detection range of 0-5000 ppm. It combines audible and visual alarms for immediate alerts, a backlit LCD for easy reading, and a durable, compact design ideal for home, car, camping, and travel use. Powered by three AAA batteries, it offers up to 40 hours of continuous operation with smart power-saving features and low battery warnings, ensuring reliable protection against CO poisoning wherever you are.

## Description

Shop TopTes CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange. Free delivery on eligible orders of £20 or more.

## Features

- Carbon Monoxide Detector: TopTes CT-300 is an ideal portable CO tester to help you detect CO gas concentrations timely and accurately, reducing the risk of CO poisoning and protecting your life. It is a must-have tool for homeowners, drivers, campers, DIY-ers, tourists, etc
- Swift & Precise Measurement: The CT-300, with an advanced electrochemical sensor head, swiftly detects CO levels from 0-5000 ppm. Its sensitivity ensures early warnings, allowing timely actions to prevent health risks. Accurate readings empower quick decisions, promoting safety and well-being. Versatile and portable, it guards against CO in various settings, ensuring peace of mind
- Visual & Audible Alarm: The travel CO detector uses both visual and audible alarms. When the concentration of CO reaches the alarm threshold, the screen changes color and emits an urgent alarm sound to alert you of the presence of CO gas in your surroundings, allowing you to promptly detect the danger, protect yourself
- User-Friendly Functions: With high-quality ABS and PC material and anti-slip edge texture, CT-300 is durable and portable; It can be used for 40 hours with new batteries; Low-power indicator will remind you of time to change batteries; It will automatically switch off when not in operation or when no gas is detected within 10 minutes to save power; Backlit screen for easy viewing, adaptable to dim environments
- What You Get: You will receive CT-300 Carbon Monoxide Detector, Protective Case, AAA Batteries, User Manual

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CL9MV4MG |
| Alarm | Audible, Visual |
| Best Sellers Rank | 128,424 in DIY & Tools ( See Top 100 in DIY & Tools ) 135 in Carbon Monoxide Detectors |
| Brand | TOPTES |
| Colour | Orange |
| Country of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,078) |
| Included Components | 1x CT-300 Carbon Monoxide Detector, 1x Protective Case, 1x User Manual, 3x AAA Batteries |
| Item Weight | 0.3 Kilograms |
| Manufacturer | TOPTES |
| Manufacturer Warranty Description | A 36-month after-sale service and lifetime technical support. |
| Model Number | CT-300 |
| Number of Items | 1 |
| Operating Humidity | 90 percent |
| Part Number | CT-300 |
| Power source | Battery Powered |
| Product Style | CT-300 CO detector |
| Sensor Type | Electrochemical |
| Unit Count | 1.0 count |

## Product Details

- **Alarm:** Audible, Visual
- **Brand:** TOPTES
- **Colour:** Orange
- **Item weight:** 0.3 Kilograms
- **Number of items:** 1
- **Operating humidity:** 90 percent
- **Power source:** Battery Powered
- **Sensor type:** Electrochemical
- **Style:** CT-300 CO detector
- **Unit count:** 1.0 count

## Images

![CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange - Image 1](https://m.media-amazon.com/images/I/7139F43kLCL.jpg)

## Available Options

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

## Questions & Answers

**Q: What should I pay attention to before using the CT-300?**
A: Please open the CT-300 in clean air (such as outdoors with ventilation) and wait for the preheating to complete, which is expected to take 5 seconds.

**Q: Why do I smell gas leakage but the CT-300 doesn't display any values?**
A: Carbon monoxide is a colorless and odorless gas. The odor you're smelling may not be from carbon monoxide gas. Try using a combustible gas detector for testing.

**Q: Why can't carbon monoxide be detected in a closed room?**
A: When there is no significant source of combustion indoors, even in a closed room, carbon monoxide will not be generated. The gases exhaled by humans contain carbon dioxide (CO2), which is a different gas from carbon monoxide (CO).

**Q: Why can't carbon monoxide be detected even when there is a combustion source present?**
A: Not all combustion produces CO gas, only incomplete combustion does, which is characterized by a red/yellow flame in most cases. Also, ensure proximity during measurement to prevent gas dispersion, which may lead to undetectable concentrations.

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-02*