What Is the SHT31? Accurate Temperature+Humidity Sensor and Uses
The SHT31 is a high-accuracy digital temperature and humidity sensor (Sensirion, I2C, 0x44/0x45). With ±0.3 °C and ±2% RH accuracy it is more accurate, faster and more stable than the DHT22. It is preferred for precise climate measurement in HVAC, laboratory and industrial use.
The SHT31 is a high-accuracy digital temperature and humidity sensor (Sensirion, I2C). Compared with the DHT22 it is more accurate, faster and more stable; it is preferred where precise climate measurement is needed. For the concept, see what is a humidity sensor · what is I2C.
What is the SHT31 used for?
Precise ambient/climate monitoring, HVAC, laboratory and industrial humidity/temperature measurement. It is read fast over I2C; unlike the DHT series it offers high accuracy (±0.3 °C, ±2% RH) and repeatability.
Specifications
| Parameter | Value |
|---|---|
| Measures | Temperature + humidity |
| Accuracy | ~±0.3 °C, ±2% RH |
| Interface | I2C (address 0x44 / 0x45) |
| Supply | Chip 2.4–5.5 V |
Equivalents
- DHT22: cheaper but less accurate.
- AHT20 / AHT10: cheap I2C temperature+humidity.
- BME280: temperature + humidity + pressure.
Find it in our catalog
Use the SHT31 search.