| TVOC measuring range |
0 mg/m³ to 2.000 mg/m³ |
| CO2 measuring range |
370 ppm to 9999 ppm |
| HCHO measuring range |
0 mg/m³ to 1.000 mg/m³ |
| AQI measurement range |
0 μg/m³ to 500 μg/m³ |
| PM10 measuring range |
0 μg/m³ to 1000 μg/m³ |
| Particulate matter concentration range |
0 μg/m³ to 1000 μg/ m³ |
| Temperature measurement range |
-4 °F to 140 °F (-20 C to 60 ℃) |
| Humidity measurement range |
0% to 100% RH |
| Particle counting efficiency |
50% (0.3 µm), 98% (>=0.5 µm) |
| PM 2.5 Accuracy |
±10% (100 to 500 μg or m³), ±10 μg or m³ (0 to 100 μg or m³) |
| Standard volume |
0.1 (L) |
| Single response time |
±1 s |
| Working current |
220 MA |
| Measurement interval |
4 s |
| Co2 measurement accuracy |
±3% of readings of ±40 PPM |
| Response time |
2 minutes by 90% |
| Operating temperature range |
32 °F to 122 °F (0 ℃ to 50 ℃) |
| Operating humidity range |
0% to 90% RH non-condensation |
| Power supply battery |
Built-in removable 3.7 V or 18650 battery or external 5 V USB power supply |
| Standby time |
2200 mAh can work continuously >9 hours |
| Size |
5.51 in × 5.27 in × 1.29 in (140 mm × 134 mm × 33 mm) |
| Weight |
0.47 lb (215 g) |
