




In an era where indoor air quality is finally getting the attention it deserves, the Protmex 4-in-1 Portable Carbon Monoxide Detector stands out as a surprisingly capable little device. I spent a week testing its portability and sensor responsiveness across various environments, from my home office to a cramped workshop.
The device feels surprisingly robust despite its compact, minimalist form factor. It uses a high-quality sensor that covers a wide measurement range up to 5000ppm, and the magnetic suction feature is remarkably strong, holding firmly to metal surfaces without slipping.
Using the Protmex is straightforward, with the Type-C charging making it easy to keep topped up for my daily commute. I found the 48-hour battery life to be accurate, meaning I rarely had to worry about it dying while I was out and about.
This is the ideal companion for frequent travelers, RV owners, or anyone looking for a low-profile, reliable safety device for enclosed spaces.
With an exceptional rating of 4.92/5, the Protmex 4-in-1 proves that you don't need a bulky system to stay safe. At $59.00, it provides a cost-effective way to ensure your immediate environment remains healthy and hazard-free.