SMART SENSOR Rechargeable Formaldehyde Environmental Air Quality Alarm Detector 1. PM10 particulate matter: 0~999 ugm3 2. PM2.5 particulate matter: 0~999 ugm3 3. TVOC (total volatile organic compounds): 0~5.00 mgm3 4. C6H6 (benzene): 0~3.00 mgm3 5. Temperature: 10~45°C 6. Humidity: 10%RH~90%RH 7. Data storage capacity: 5000 records 8. Power supply: 18650 rechargeable battery (with protection board) 2500mAh, USB DC 5V2A 9. Standby time: 6 hours 10. Three-color indicator for air quality status: green (excellent), yellow (mild pollution), red (severe pollution) 11. 5000 data records (one record per minute) with automatic update. Data can be exported or viewed as a list and trend chart using the PC software, allowing for analysis of air quality over time. 12. Real-time clock display, 2.8-inch TFT full-angle true-color screen with LCD screen-off function. 13. Selectable single-item testing and simultaneous testing; selectable continuous recording and timed recording. 14. ARM core chip for high performance, high integration, and low power consumption in a real-time operating system. 15. Weight: 206g 16. Dimensions: 146x80x68mm