1. Real-time fast refresh Updates CO2 readings every 1 second for real-time monitoring, offering faster detection, stable measurements, and more accurate air quality readings. 2. Multi-parameter display Monitors and displays ambient CO2 concentration, temperature and humidity so you can assess overall environmental conditions at a glance. 3. Easy to read Color-changing indicators alert you to air quality, and a smart color screen provides a clear, readable presentation of all parameters. 4. Long battery life Standby time 240 to 360 minutes, wireless operation, built-in 1200 mAh rechargeable battery, USB-C charging for convenient power top-ups. Applications - Home: place in living room, bedroom or nursery to continuously monitor indoor air quality. - Office or classroom: keep track of ventilation and comfort in occupied spaces. - Workshop or kitchen: monitor CO2 and humidity to manage ventilation during cooking or work processes.