Key benefits Accurate, stable CO2 readings to help you assess indoor air quality and take timely action. Fast, real-time updates (refreshes every 1 second) so you always have up-to-date information. Multi-parameter monitoring (CO2, temperature, humidity) in one compact device for a fuller view of indoor conditions. Clear, color-changing screen that provides immediate visual alerts and makes readings easy to read at a glance. Portable and easy to recharge via USB Type-C with a built-in 1200 mAh battery for wireless use. What this device solves Detects elevated CO2 quickly to indicate inadequate ventilation and reduce risks associated with stale air. Shows temperature and humidity alongside CO2 so you can correlate poor air quality with environmental conditions. Color-screen alerts remove guesswork and make it simple to know when to open windows, increase ventilation, or reduce occupancy. Main features Stable measurement performance for consistent CO2 readings. Real-time refresh rate: updates every 1 second for faster detection and response. Displays three parameters: carbon dioxide concentration, ambient temperature, and humidity. Intelligent color screen: color changes to draw attention and enable quick interpretation of current air conditions. Convenient Type-C charging interface and 1200 mAh rechargeable battery. Wireless detection and portability; standby time approximately 240–360 minutes. Practical applications Home: Monitor living rooms, bedrooms, and nurseries to ensure fresh air and safer breathing conditions, especially when windows are closed or during sleep. Workspaces and meetings: Keep conference rooms and small offices ventilated by tracking CO2 during gatherings and adjusting ventilation when needed. Classrooms and daycare centers: Maintain healthy indoor air for children and staff by using color alerts to prompt timely ventilation breaks. Technical summary Parameters monitored: CO2 concentration, temperature, humidity Refresh rate: 1 second Display: Color screen with visual alert colors Charging: USB Type-C Battery: Built-in 1200 mAh rechargeable battery Standby time: Approximately 240–360 minutes Operation: Wireless portable detection How to get the most from the device Place the detector at breathing height in the room for representative readings. Use the color screen as a prompt to ventilate when colors indicate rising CO2. Recharge via the Type-C port when battery is low to maintain uninterrupted monitoring. This device offers a practical, fast, and easy way to monitor indoor CO2, temperature, and humidity so you can make informed decisions about ventilation and comfort.