Design and Development of a Low-Cost, Portable Monitoring Device for Indoor Environment Quality

Table 2

Sensor module names, measurement ranges, and accuracy.

Type	Module	Measurement range	Accuracy
Temperature	SHT31	0–100%	±2% RH
Humidity	SHT31	−40 to 125°C	±0.3°C
PM2.5/PM10	HPMA115S0	0–1000 μg/m^3	±15%
Total VOC (TVOC1)	CCS811	0–1200 ppb	N/A
Total VOC (TVOC2)	iAQ-Core C	125–600 ppb	N/A
Total VOC (TVOC3)	MiCS-VZ-89TE	0–1000 ppb	N/A
CO2	T6713	0–5000 ppm	±25 ppm
CO	LLC 110-102	0–1000 ppm	±2 ppm
Indoor air quality	LLC 110-801	0–100 ppm	±2 ppm
Illuminance (light)	TSL2561	0–17,000 lux	±5 lux
Microphone	Adafruit #1063	0–80 dB	±5 dB