SHT31 Weatherproof Temperature and Humidity Sensor

This temperature and humidity sensor from DFRobot houses the Sensirion SHT31 sensor in a weatherproof enclosure and is suitable for outdoor measurements. It is waterproof but must not be immersed in water. The sensor communicates via I2C and runs on 3.3 V and 5 V, for example on Arduino, micro:bit or ESP32.

Important: The housing is made of PE. DFRobot therefore recommends not using the sensor above 80 °C, although the SHT31 measures up to 125 °C.

For measurements in water DFRobot recommends a DS18B20, for example the 1m Waterproof DS18B20 Temperature Sensor Shielded.

Features:

• Weatherproof housing with cable gland
• Waterproof, not for immersion
• I2C, for 3.3 V and 5 V microcontrollers
• Cable about 1 m with wire end ferrules

Application Examples:

• Weather station
• Monitoring the climate in a greenhouse or cellar
• Outdoor temperature and humidity in the smart home
• Integration into Home Assistant with ESPHome

Documentation:

• ESPHome documentation: SHT3X-D Temperature+Humidity Sensor
• DFRobot Wiki SEN0385
• DFRobot_SHT3x library for Arduino (GitHub)
• Dimension drawing (PDF)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: SEN0385
• Sensor: SHT31 (Sensirion)
• Operating voltage: 3.3 to 5 V
• Operating current: below 1.5 mA
• Communication: I2C
• Humidity: 0 to 100 % RH, ±2 % RH at 25 °C
• Temperature: -40 °C to 125 °C, housing up to 80 °C
• Temperature accuracy: ±0.2 °C from 0 °C to 90 °C (typical)
• Pinout: red VCC, black GND, green SDA, yellow SCL (DFRobot)
• Label on the cable: FS400-SHTXX, SDA green or blue, SCL yellow or white
• Cable length: about 1 m
• Weight: 80 g

Scope of Delivery:

• 1× SHT31 Weatherproof Temperature and Humidity Sensor