Our Verdict
In an era where indoor air quality is finally getting the attention it deserves, the Protmex 4-in-1 Carbon Monoxide Detector stands out as a genuinely useful piece of gear. I tested this device across various environments, from a home office to an enclosed workshop, to see if its compact design could truly compete with bulkier, stationary monitors.
Performance & Build Quality
The device feels surprisingly robust for its mini form factor, with a build that prioritizes portability without sacrificing sensor accuracy. Its integrated magnetic suction is a standout feature, allowing it to snap securely to metal surfaces for quick, stable placement wherever you happen to be.
Day-to-Day Experience
Using the Protmex is refreshingly simple, as the interface is intuitive enough that you can start monitoring air quality within minutes of unboxing. The Type-C charging is a massive convenience, keeping the unit running for nearly two full days on a single charge, which makes it perfect for frequent travel or long-term monitoring in different rooms.
This monitor is perfect for anyone living or working in enclosed spaces who wants a simple, portable, and effective way to track CO and CO2 levels.
Final Thoughts
Overall, the Protmex 4-in-1 earns its 4.92/5 rating by delivering exactly what it promises in a small, reliable package. At $79.00, it is a smart, affordable safety upgrade for your living or work space this year.
