









4-in-1 Carbon Monoxide Detector & CO2, Temperature and Humidity Monitor
Feature
✅ 4-in-1 Air Safety Monitoring for CO, CO₂, Temperature & Humidity
✅ Dual Audible & Visual Alerts with an 85dB Alarm and Flashing Red Light
✅ Up to 340 Hours Runtime
✅ Built-In Flashlight & Flexible Placement—Hang, Mount, or Place
✅ Ideal for Homes, RVs, Workshops & Camping


Specification
Color: Green
Measurement Range: 0–1,000 ppm
Accuracy: ±1 ppm
Battery Capacity: 2,000 mAh
Runtime: Up to 340 hours
Flashlight Output: ≥100 lumens
Charging Port: USB Type-C
Alarm Type: Audible and Visual Alarm
Charging Time: 2–4 hours
Package Weight: 0.37 lbs (0.167 kg)
Package Dimensions: 3.1 × 2.2 × 5.2 in (7.9 × 5.5 × 13.1 cm)
Package
iToolmax 4-in-1 Carbon Monoxide Detector × 1
Hook × 1
Type-C Charging Cable × 1
User Manual × 1
Why Choose iToolMax?
🚚Fast, Free Shipping
Free shipping on all items to most locations nationwide.It usually takes 4-7 business days for your package to be delivered, so you can sit back and relax, worry-free.
🔙30-Day Risk-Free Trial
Try it worry-free! Full refund within 30 days if you’re not satisfied.
🔄1 Year Warranty
We provide a one-year warranty to every customer who purchases our products, so you can use them with peace of mind!
🤛Lifetime Customer Support
We'll Always be There for You. If you have any questions or concerns, feel free to contact us at support@itoolmax.com or online chat.
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✅ Trusted by 200,000+ Customers
Verified by real users—shop with confidence and ease.


Precise Air Monitoring for Safer Breathing
Are you tired of worrying about hidden gas hazards at home? CO poisoning claims hundreds of lives every year.
iToolMax 4-in-1 Carbon Monoxide Detector can monitor CO and CO₂, every 0.5 seconds. Hazardous levels trigger an audible and visual alarm in as little as 3 seconds.—helping you monitor your surroundings and protect yourself and your family.

4-Level CO Detection for Enhanced Safety
The LCD screen shows the current CO level at a glance. As CO rises, the warning changes color and the alarm increases up to 85dB—loud enough to alert you even while sleeping.
- 0–50 PPM — Safe (Green light · No alarm)
- 51–100 PPM — Caution (Yellow light · Low-level alarm)
- 101–200 PPM — Warning (Orange light · Medium-level alarm)
- 201–1000PPM — Danger (Red light · High-level emergency alarm)

Smart Gas Monitoring, Designed to Stand Out
- Winner of the 2026 iF Design Award
- Detect Methane & Propane at 10% LEL
- Real-Time CO, CO₂, Temperature & Humidity on the LCD Screen

Multiple Use Scenarios
It’s a thoughtful safety gift for campers, hikers, RV owners, homeowners, and outdoor enthusiasts.
🏠 Home
🏢 Workplace
🚗 Car
⛺ Camping & Outdoors
FAQ
Does this carbon monoxide detector work in vehicles?
Yes. iToolmax Portable Carbon Dioxide Detector is ideal for cars, RVs, and campers. Its magnetic back securely attaches to any metal surface inside your vehicle, it's a practical camping tool and portable outdoor tool.
Is this carbon monoxide detector waterproof?
No, iToolMax CO Gas Detector is not waterproof. Keep it away from rain, water, steam, and high-moisture areas, and always use or store it in a dry, well-ventilated location.
How long is the battery life of this carbon monoxide detector?
The battery lasts up to 340 hours. iToolmax Carbon Monoxide Detector has a built-in 2000mAh battery and takes approximately 2–4 hours to fully charge.
What gases does this carbon monoxide detector detect?
It monitors carbon monoxide, carbon dioxide, temperature, and humidity. iToolMax 4-in-1 Gas Detector is one of the most comprehensive air-monitoring tools for home use.
What should I do when the carbon monoxide detector warning activates?
Move to fresh air immediately. When iToolMax CO2 Detector alarm activates, leave the area, open doors or windows only if it is safe, and contact emergency services or a qualified technician. Do not return until the area has been confirmed safe.
