
TVOC sensor	Sensirion SGPC3 Digital, auto calibration Sampling rate: In app: 2 sec, CSV: 1 min
PM sensor	Sensirion SPS30 PM1, PM2.5, PM10 Sampling rate: Always On (In app: 1 sec, CSV: 1 min), 5/10/15 min, on demand
Temperature Humidity Pressure sensor	Bosch BME280 Sampling rate: In app: 1 sec, CSV: 1 min
Memory size	256 KB
History size	10 days
Bluetooth	5.0
Battery capacity	2000 mAh
Battery life	up to 10 days, depending on the measurement intervals
Weight	3.7 oz (104 g)
Size	Height x Width x Depth 3.4 x 2 x 0.9 in 86 x 50 x 22 mm

Measurement range and accuracy


TVOC output range	0 - 60 ppm
TVOC typical accuracy	15% of measured value
PM output range	1 - 1000 μg/m³
PM typical accuracy	PM1, PM2.5 0 to 100 μg/m³, [±5 μg/m³ + 5 % m.v.] 100 to 1000 μg/m³, ±10% m.v. PM10 0 to 100 μg/m³, ±25 μg/m³ 100 to 1000 μg/m³, ±25 % m.v.
Temperature*	±1°C (0-65°C)
Humidity	±3%RH
Pressure	±1 hPa

* Temperature value depends on the PCB temperature, sensor element self-heating and ambient temperature and is typically above ambient temperature.