SHT31 - digital humidity and temperature sensor I2C - Adafruit 2857

Easy to use temperature and humidity sensor, powered by 3 V to 5.0 V. Communicates through an I2C interface. The accuracy is 0.3°C. The sensor is used, i.a. for meteorological stations and systems of control of the conditions in the premises.

For proper operation, it is sufficient to connect power and data line SDA and clock line SCL. On Board are resistors pulling-up 10 kω.

The address selection I2C. Low state (by default) - 0x44

High - 0x45.

The pin of the alarm and interruption. Details inthe documentation.

The product is compatible with Arduino

The manufacturer has prepared auser guideanda library along with a sample programfor Arduino users.

Pins are the solder fields, for solderinggoldpin connectors- pitch of 2.54 mm. Therefore, it is possible to connect the system with the breadboardor the main module, using wires. The set includes the goldpin connectors for self-soldering.

• Supply voltage: 2.5 to 5.0 V
• Fast response time
• Two mounting holes with diameter of 3 mm
• Temperature
  • Measurement range: -40 to 125°C
  • Accuracy: ± 0.3°C
• Humidity:
  • Measuring range: 0% RH to 100%RH
  • Accuracy: ±2%RH*
• Interface: I2C
• I2C address: is 0x45 0x44 or
• Size: 18 x 25 x 5 mm
• Weight 0.8 g

*RH - relative humidity is expressed in percents. It is the ratio of actual humidity in the air to its maximum number that can keep the air at a given temperature.

• Manufacturer's website - Adafruit 2857
• User manual
• The Arduino Library
• Documentation of sensor SHT31
• Diagram of the module