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| Type of measurement | Model | Power voltage | Measurement, range, accuracy | Communication | Note |
|---|---|---|---|---|---|
 Airflow Sensor Nebulizer Air Switch | Unidro 6025/6027  | 3.3V (2.5 .. 4.5V) | Output voltage: 3.7V | Analog | Load current: 5mA Response time: 46ms |
  Temperature Humidity | Adafruit AM2315C  | 3.3 / 5 V (2.2 .. 5.5V) | Temperature measurement range: -40 .. +80 °C Temperature measurement accuracy: ±0.3°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±2% | I²C | Measure: 3.2 mW Reaction time: 8s |
 Temperature Air-pressure | Bosch BMP180  | 3.3 V (1.62 .. 3.6V) | Temperature measurement range: -40 .. +85 °C Temperature measurement accuracy: ±1.5°C Air pressure Range: 4.35PSI .. 15.95PSI (30kPa .. 110kPa) Air pressure accuracy: ±2% | I²C default addr.: 0x77 (fix) | Maximum Pressure: 145.04PSI (1000kPa) Temperature resolution: 0.1 °C Pressure resolution: 1 Pa |
| Temperature Humidity Air pressure | Bosch BME280  | 3.3 V (1.71 .. 3.6V) | Temperature measurement range: -40 .. +80 °C Temperature measurement accuracy: ±0.5°C (-40..85) Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±3% Air pressure Range: 300 .. 1100 hPa Air pressure accuracy: ±0.25% | I²C default addr.: 0x76/77 SPI | - |
| Temperature Humidity Air pressure | Bosch BME680  | 3.3 V (1.71 .. 3.6V) | Temperature measurement range: -40 .. +80 °C Temperature measurement accuracy: ±1.5°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±3% Air pressure Range: 300 .. 1100 hPa Air pressure accuracy: ±0.25% | I²C default addr.: 0x76/77 SPI | Direct output of IAQ: Index for Air Quality |
| Temperature Air-pressure | Bosch BMP280  | 3.3 V (1.71 .. 3.6V) | Temperature measurement range: -40 .. +85 °C Temperature measurement accuracy: ±1.5°C Air pressure Range: 4.35PSI .. 15.95PSI (30kPa .. 110kPa) Air pressure accuracy: ±2% | I²C default addr.: 0x76 SPI | Maximum Pressure: 290.08PSI (2000kPa) Temperature resolution: 0.01 °C Pressure resolution: 0.16 Pa |
| CO2 VOC | Sciosense CCS811  | 3.3V (1.8 .. 3.6V) | equivalent CO2 (eCO2): 400 ppm .. 32768 ppm equivalent Total Volatile Organic Compound (eTVOC): 0 ppb .. 29206 ppb. | I²C default address: 0x5A / 0x5B | Standard (100kbit/s) and fast (400kbit/s) I²C interface Power Consumption maximum: 46 mW |
Non-Contact Thermal Sensor | Omron D6T-32L  | 5V | Number of elements: 1024 (32 × 32) Current consumption: 19 mA Object temperature detection: D6T-32L-01A: 0 to 200°C | I²C | Response time: 200 msec Arduino lib |
Non-Contact Thermal Sensor | Omron D6T-44L  | 5V | Number of elements: 16 (4 × 4) Current consumption: 5 mA Object temperature detection: D6T-44L-06: 5 .. 50°C D6T-44L-06H: 5 .. 200°C | I²C | Response time: 300 msec Arduino lib |
Non-Contact Thermal Sensor | Omron D6T-8L  | 5V | Number of elements: 8 (1 × 8) Current consumption: 5 mA Object temperature detection: D6T-8L-09: 5 .. 50°C D6T-8L-09H: 5 .. 200°C | I²C | Response time: 250 msec Arduino lib |
Non-Contact Thermal Sensor | Omron D6T-1A  | 5V | Number of elements: 1 (1 × 1) Current consumption: 3.5 mA Object temperature detection: D6T-1A-01: 5 .. 50°C D6T-1A-02: -40 .. 80°C | I²C | Response time: 100 msec Arduino lib |
| Temperature Humidity | DHT11  | 3.3 / 5 V (3.3 .. 5.5V) | Temperature measurement range: 0 .. +50 °C Temperature measurement accuracy: ±2°C Humidity measurement range: 20..90% RH Humidity measurement accuracy: ±5% | 1-Wire | 8 bit resolution, response time 10 sec |
| Temperature Humidity | DHT20  | 3.3 / 5 V (2.2 .. 5.5V) | Temperature measurement range: -40 .. +80 °C Temperature measurement accuracy: ±0.5°C (-40..80) Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±3% | I²C default addr.: 0x38 | - |
| Temperature Humidity | DHT22 AM2302  | 3.3 / 5 V (2.2 .. 5.5V) | Temperature measurement range: -40 .. +80 °C Temperature measurement accuracy: ±0.5°C (-40..80) Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±2% | single-bus | - |
Barometric Pressure Sensor | Infineon DPS310  | 3.3V | Supply voltage: VDDIO: 1.2 .. 3.6 V Operation range: Pressure: 300 .. 1200 hPa. Temperature: -40 – 85 °C Pressure sensor precision: ± 0.002 hPa (or ±0.02 m) (high precision mode) Relative accuracy: ± 0.06 hPa (or ±0.5 m) Absolute accuracy: ± 1 hPa (or ±8 m) Temperature accuracy: ± 0.5°C Pressure temperature sensitivity: 0.5Pa/K | I²C or SPI I2C default address: 0x76 (SDO←GND) or 0x77 (SDO←VDDIO) | Measurement time: Typical: 27.6 ms |
| Temperature | Dallas DS18B20  | 3.3 / 5 V (3.3 .. 5.5V) | Temperature measurement range: -55 .. +125 °C Temperature measurement accuracy: ±0.5°C | 1-Wire | 9 to 12 bit (selectable) resolution Conversion Time < 750ms Current Consumption: 1mA |
| NO² | MEMS GM-102b  | 5V | Detection Range: 0.1~10ppm (NO²) Heater Resistance: 80Ω±20Ω（room temperature | analog signal | - |
| alcohol gas | MEMS GM-302b | 5V | Detection Range: 1..500ppm (Ethanol vapor) 80Ω±20Ω（room temperature | analog signal | - |
| Alcohol (C2H5OH) Hydrogen(H2) Formaldehyde(CH2O) | MEMS GM-502b | 5V | Detection: Alcohol (C2H5OH), 10..500ppm Detection: Hydrogen(H2), 1..1000ppm Detection: Formaldehyde(CH2O), 10..100ppm | analog signal | - |
| Carbon monoxide (CO) Hydrogen (H2) | MEMS GM-702b | 5V | Detection: Carbon monoxide sensor (CO) : 10..5000ppm Hydrogen sensor (H2): 10..500ppm | analog signal | - |
| Temperature Humidity | Texas Instruments HDC 1080  | 3.3 - 5 V (2.7 .. 5.5V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.2°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±2% | I²C default addr.: 0x40 | 14 Bit Measurement Resolution 100 nA Sleep Mode Current |
| Temperature Humidity | TE Connectivity HTU21  | 3.3V (1.5 .. 3.6V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.3°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±2% | I²C default addr.: 0x40 (fix) | Power Dissipation: 2.7 µW Resolution: 12 / 8 bit Measuring Time: 3..16 ms |
| Carbon monoxide (CO) Methane (CH4) Ethanol (C2H5OH) Propane (C3H8) Butane (C4H10) Hydrogen (H2) Hydrogen sulfide (H2S) Ammonia (NH3) | Fermion MICS-5524 V1.0  | 5V | The module is intended for educational and hobby purposes! Measuring range: 1 .. 1000 ppm (carbon monoxide CO) 10 .. 500ppm (Ethanol C2H5OH) 1 .. 1000ppm (Hydrogen H2) 1 .. 500 ppm (NH3 ammonia) > 1000 ppm (methane CH4) | analog signal | - |
Smoke gas Combustible gas | Winsen MQ-2  | 5V | Flammable gas concentracion: 300 .. 10'000ppm Heater Resistance; RH: 29Ω ±3Ω（room tem.） Heater consumption; PH: ≤950mW Sensitivity;S: Ro(in air) / Rs (2000 ppm C3H8) ≥ 5 Output Voltage;Vs: 2.5V～4.0V（in 2000 ppm C3H8） Concentration Slope;α: ≤0.6 (R3000 ppm / R1000 ppm C3H8) | analog signal | Lifespan: 10 years Preheat time: Over 24 hour |
Alcohol gas Small sensitivy: Benzine gas | Winsen MQ-3  | 5V | Detecting concentration scope：0.05 mg / 10 mg/L Alcohol Sensing Resistance: 1 MΩ - 8 MΩ (0.4 mg/L alcohol) | analog signal | Preheat time: Over 24 hour |
CH4 gas Natural gas LNG Small sensitivy: Alcohol Smoke | Winsen MQ-4  | 5V | Detecting concentration scope：200-10'000ppm CH4, natural gas Sensing Resistance: 10KΩ- 60KΩ (1000ppm CH4) | analog signal | Preheat time: Over 24 hour |
LPG Iso-butane Propane Small sensitivy: Alcohol Smoke | Winsen MQ-5  | 5V | Detecting concentration scope：200-10'000ppm LPG,LNG, Natural gas, Iso-butane, Propane, Town gas Sensing Resistance: 10KΩ- 60KΩ (5000 ppm methane) | analog signal | Preheat time: Over 24 hour |
Town gas Natural gas LPG LNG Iso-butane Propane Small sensitivy: Alcohol Smoke | Winsen MQ-6  | 5V | Detecting concentration scope：200-10'000ppm LPG ,iso-butane, propane, LNG Sensing Resistance: 10KΩ- 60KΩ (10'00ppm LPG) | analog signal | Preheat time: Over 24 hour |
CO | Winsen MQ-7  | 5V | Detecting concentration scope：over 300 ppm CO (Carbon Monoxide) Sensing Resistance: 2KΩ- 20KΩ (100 ppm CO) | analog signal | Preheat time: Over 48 hour |
H2 Small sensitivy: Alcohol LPG cooking fumes | Winsen MQ-8  | 5V | Detecting concentration scope：100-10000ppm Hydrogen (H2) Sensing Resistance: 10KΩ- 60KΩ (1000 ppm H2) | analog signal | Preheat time: Over 24 hour |
CO CH4 gas LPG | Winsen MQ-9  | 5V | Detecting range： 20 ppm .. 2000 ppm carbon monoxide 500 ppm .. 10'000 ppm CH4 500 ppm .. 10'000 ppm LPG Sensing Resistance: 2KΩ- 20KΩ (100 ppm CH4) | analog signal | Preheat time: Over 48 hour |
NOx NH3 alcohol Benzene smoke CO2 | Winsen MQ-135  | 5V | Detecting range： 10 ppm .. 300 ppm NH3 10 ppm .. 1000 ppm Benzene 10 ppm .. 300 ppm Alcohol Sensing Resistance: 30KΩ- 200KΩ (100 ppm NH3) | analog signal | Preheat time: Over 24 hour |
Oxigen | AlphaSense O2-A2  | 5V | Range of oxygen sensor: 0..30 % Load resistance: 47-100 Ω | analog signal | - |
CO2 humidity temperature | SCD-30  | 3.3V / 5V | Humidity range: 0 .. 100 %RH Temperature range: -40°C .. 70°C CO² range: 0 .. 40’000 ppm (I²C, UART), 0 .. 5’000 ppm (PWM) | UART (Modbus Point to Point; TTL Logic), PWM and I²C | Response time: 20s Sensor lifetime: 15 years |
| CO2 Air-quality Temperature Humidity | Sensirion SCD40-D-R2  | 3.3V / 5V (2.4 .. 5.5V) | CO2 output range: 0 .. 40'000 ppm CO2 measurement accuracy: ± 40 ppm Humidity measurement range: 0 %RH .. 100 %RH Humidity measurement accuracy: ±6 %RH Temperature measurement range: 10°C .. 60°C Temperature measurement accuracy: ±1.5 °C | I²C default address: 0x62 | SCL clock frequency: 100 kHz |
VOC - CO2-eq Sensor | Sensirion SGP30  | 1.8V | Supply voltage 1.62 .. 1.98 V Measurement range (CO₂-eq): 0 .. 1000 ppm Specified range: Ethanol signal: 0.3 ppm .. 30 ppm H2 signal 0.5 ppm .. 3 ppm | I²C I2C default address: 0x58 | Sampling frequency: Max. 40 Hz Data sheet |
Indoor Air Quality Sensor for VOC Measurements | Sensirion SGP40  | 3.3V | Supply voltage 1.7 .. 3.6 V Ethanol in clean air: 0 .. 1000 ppm | I²C I2C default address: 0x59 | Sampling frequency: Max. 40 Hz Data sheet |
Air Quality Sensor for VOC and NOx Measurements | Sensirion SGP41  | 3.3V | Supply voltage 1.7 .. 3.6 V Ethanol in clean air: 0 .. 1.000.000 ppm NO2 in clean air: 0 .. 10.000 ppm | I²C I2C default address: 0x59 | Sampling frequency: Max. 40 Hz Data sheet |
| Temperature Humidity | Sensirion SHT20  | 3.3V (2.1 .. 3.6V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.3°C Humidity measurement range: 0..100% RH Humidity measurement accuracy:±3% | I²C default addr.: 0x40/41 | 3.2 µW (at 8 bits, 1 measurement /s) |
| Temperature Humidity | Sensirion SHT21  | 3.3V (2.1 .. 3.6V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.3°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±2% | I²C default addr.: 0x40/41 | 3.2 µW (at 8 bits, 1 measurement /s) |
| Temperature Humidity | Sensirion SHT25  | 3.3V (2.1 .. 3.6V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.2°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±1.8% | I²C default addr.: 0x40/41 | 3.2 µW (at 8 bits, 1 measurement /s) |
| Temperature Humidity | Sensirion SHT30  | 3.3 / 5 V (2.15 .. 5.5V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.2°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±2% (10..90%) | I²C default addr.: 0x44/45 | 4.8 µW (1 measurement/s) |
| Temperature Humidity | Sensirion SHT31 | 3.3 / 5 V (2.15 .. 5.5V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.2°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±2% (0..100%) | I²C default addr.: 0x44/45 | 4.8 µW (1 measurement/s) |
| Temperature Humidity | Sensirion SHT35 | 3.3 / 5 V (2.15 .. 5.5V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.2°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±1.5% (0..80%) | I²C default addr.: 0x44/45 | 4.8 µW (1 measurement/s) |
| Temperature Humidity | Sensirion SHT40  | 3.3 (1.08 .. 3.6V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.2°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±1.8% | I²C default addr.: 0x44/45 | 4.0 µW (1 measurement/s) |
| Temperature Humidity | Siliconlabs Si-7021  | 3.3V (1.9 .. 3.6V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.3°C Humidity measurement range: 0..100% RH Humidity measurement accuracy: ±2% | I²C default addr.: 0x40 | - |
| Temperature | Microchip TC1047A  | 5 / 3.3V (2.5 .. 5.5V) | Temperature measurement range: -40 .. +125 °C Temperature measurement accuracy: ±0.5°C | analog 10mV/°C | Maximum Supply Current 60uA |
Methane Natural gas | GL Sciences TGS-2611  | 5V | Sensor resistance in 5000ppm of methaneat 20°C and 65% R.H. Sensor resistance: 0.68 .. 6.8 kΩ in 5000 ppm methane | analog signal | Conditioning period before test: 7 days |