Enhance your environment's safety and comfort with our USB Rechargeable Portable Air Quality Monitor, designed for precise CO2, temperature, and humidity detection. Ideal for classrooms, restaurants, and other indoor spaces, this device ensures you stay informed about the air quality around you. 1S Time Refresh: Experience rapid detection with our monitor's 1-second refresh rate. This feature captures the constantly changing CO2 concentrations, providing you with more stable and reliable measurements even under fluctuating conditions. One Button Switch Full Control: Enjoy the simplicity of full control with a single button. Long press the power button for 3 seconds to easily start or shut down the device. Once activated, it automatically begins detection, making it user-friendly and efficient. Detection More Accurate: Utilizing advanced infrared detection technology, our monitor offers precise assessments of air quality issues. This ensures you receive accurate data to make informed decisions about your environment. Real Time Monitoring: Stay updated with real-time displays of carbon dioxide concentration per cubic meter. The monitor features a flashing display to indicate interval heights, allowing you to quickly assess air quality at a glance. Detection at Any Time: Prioritize health and safety with our monitor's wide detection range for carbon monoxide, spanning 400-5000PPM. This capability ensures you are always aware of potential air quality hazards, enabling timely interventions. Invest in our Portable Air Quality Monitor to maintain a healthy and safe environment, whether at home, in the classroom, or in a restaurant. With its comprehensive features and easy operation, it's the perfect tool for proactive air quality management.