Table 4.
Low-cost sensors.
| IAQ † | TC ‡ | VC § | AC ¶ | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Sensor | Cost †† | CO2 ‡‡ | eCO2 §§ | CO ¶¶ | PM ††† | VOC ‡‡‡ | Temp | RH §§§ | Lux | Sound | |
| Adafruit | DHT22 [38,46] | £2–£5 | - | - | - | - | - | √ | √ | - | - | |
| MAX 4466 [39] | £1–£7 | - | - | - | - | - | - | - | - | √ | ||
| Amphenol | T6615 [6] | £80 | √ | - | - | - | - | - | - | - | - | |
| T6713 [38,39] | £70–£75 | √ | - | - | - | √ | - | - | - | - | ||
| AMS | CCS811 [39] | £6-£30 | - | √ | - | - | √ | - | - | - | - | |
| iAQ-Core C [39] | £15–£30 | - | √ | - | - | √ | - | - | - | - | ||
| TSL2561 [39,43] | £4–£7 | - | - | - | - | - | - | - | √ | - | ||
| BuildAX | Wireless Building Monitoring System [47] | £90 | - | - | - | - | - | √ | √ | √ | - | |
| CO2 Meters.com | K-30 [7,43,46] | Price by quotation | √ | - | - | - | - | - | - | - | - | |
| GSS | COZIR [32] | £155 | √ | - | - | - | - | - | - | - | - | |
| Hanwei | MQ7 [6,40] | £2–£7 | - | - | √ | - | - | - | - | - | - | |
| Honeywell | HIH-4030 [40] | £10–£40 | - | - | - | - | - | √ | √ | - | - | |
| HPMA115S0 [39] | £35–£45 | - | - | - | √ | - | - | - | - | - | ||
| Netatmo | Weather Station [16,34] | £130 | √ | - | - | - | - | √ | √ | - | √ | |
| Seeed Technology | MH-Z16 [36] | £65–£100 | √ | - | - | - | - | - | - | - | - | |
| MH-Z19 [36] | £15 | √ | - | - | - | - | - | - | - | - | ||
| AM2302 [7] | £3–£15 | - | - | - | - | - | √ | √ | - | - | ||
| 101020030 [7] | £3–£10 | - | - | - | - | - | - | - | √ | - | ||
| 101020023 [7] | £4–£6 | - | - | - | - | - | - | - | - | √ | ||
| Sensirion | SHT10 [6] | £2–£7 | - | - | - | - | - | √ | √ | - | - | |
| SHT15 [43] | £4–£25 | - | - | - | - | - | √ | √ | - | - | ||
| SHT31 [39] | £3–£15 | - | - | - | - | - | √ | √ | - | - | ||
| Sensorist | Wireless Pro T/RH [32] | £140 | - | - | - | - | - | √ | √ | - | - | |
| SGX SensorTech | MiCS-VZ-89TE [39] | £20–£25 | - | √ | - | - | √ | - | - | - | - | |
| Sharp | GP2Y1010AU0F [40] | £10–£15 | - | - | - | √ | - | - | - | - | - | |
| Telaire | T6615 [6] | £80 | √ | - | - | - | - | - | - | - | - | |
| T6713 [38] | £75 | √ | - | - | - | - | - | - | - | - | ||
| Texas Instruments | LM35 [40] | £1 | - | - | - | - | - | √ | - | - | - | |
Table outlines low-cost sensors used within the reviewed studies, outlining the manufacturers, models, measurement factors and typical costs. † Indoor Air Quality. ‡ Thermal Comfort. § Visual Comfort. ¶ Acoustic Comfort. †† Costs are approximate and taken from Google Shopping Search Engine – prices vary according to manufacturer and retailer. ‡‡ Carbon Dioxide. §§ Equivalent CO2 (eCO2) is the measure used to communicate the global warming potential of combined greenhouse gasses. ¶¶ Carbon Monoxide. ††† Particulate Matter (PM1.0/PM2.4/PM10). ‡‡‡ Volatile Organic Compounds. §§§ Relative Humidity.