Keep your family safe with this 5-in-1 indoor air quality monitor, designed to detect CO2, formaldehyde (HCHO), TVOC, temperature, and humidity in real time. Whether you're concerned about poor ventilation, harmful gases, or indoor pollution, this compact device delivers quick and reliable readings to help you breathe easier. The 2.8" color screen with clear icons makes it easy to understand air quality at a glance, while the built-in rechargeable battery ensures you can use it anywhere—from your home, office, classroom, nursery, to travel accommodations. Unlike basic detectors, this model uses high-precision sensors for more accurate and trustworthy monitoring.