INDUSTRIAL-GRADE AND LONG SENSOR LIFE. Temtop advanced industrial-grade laser particle sensor has a lifetime of up to 20, 000 hours. Combined with the unique particle swarm optimization algorithm, it makes particle measurement more accurate and stable.
 EASY AND CLEAR. A large TFT screen and rich display make it clear and easy to read, even with a 6-level colorful health level indicator to help you know the air easily at a glance.