Fermion: SHT31-F Digital Temperature & Humidity Sensor

This Digital Temperature & Humidity Sensor breakout board from DFRobot is based on the Sensirion SHT31-F sensor IC. Thanks to Sensirion’s CMOSens® technology, highly integrated capacitive humidity sensing components and band-gap temperature sensing components, the SHT31-F offers high reliability and long-term stability with low power consumption, fast response and strong anti-interference ability. The sensor supports I2C communication and is compatible with 3.3V/5V controllers like Arduino, micro:bit, ESP32 and more. It is easy to achieve precise and high-reliability temperature and humidity sensing for urban environment monitoring, intelligent buildings, industrial automation, smart home and other Internet of Things applications.

SHT31-F is the standard version of the SHT3x series. It provides humidity accuracy ±2% RH @ 0% RH~100% RH (at 25°C), and temperature accuracy± 0.2°C @ 0°C ~90°C (typical). The SHT31-F chip features a PTFE membrane dedicated to protecting the sensor opening from liquids and dust according to IP67. It thus allows the sensor to work under harsh environmental conditions, where spray water and high exposure to dust might be challenging for accurate sensor performance. Due to minimal package volume and the membrane’s high water vapour permeability, the response time of the relative humidity and temperature signal is identical to the value achieved by the uncovered sensor. Although the membrane option provides perfect protection against water and dust ingress, it does not, in general, prevent contamination from volatile chemicals. Selection Guide

Name SHT30 SHT31 SHT31-F SHT35

SKU SEN0330 SEN0331 SEN0332 SEN0333

IC Type SHT30-DIS-B SHT31-DIS-B SHT31-DIS-F SHT35-DIS-B

Accuracy (RH)

±2@10-90% ±2@0-100% ±2@0-100% ±1.5@0-80%

Temp (°C)

±0.2@0-6 ±0.2@0-90 ±0.2@0-90 ±0.1@20-60

Feature Cheap Cost-Effective IC Dustproof

High Accuracy

Features

* High precise, internal auto-calibrated, digital output

* Low power consumption, fast response, and strong anti-interference

* IP67 dust-proof protective film

* Compatible with 3.3V/5V controllers

Specifications

* Operating Voltage: 2.15~5.5V

* Operating Current: <1.5mA

* Humidity Detection Range: 0%RH~100%RH

* Humidity Accuracy: ±2%RH@0%RH~100%RH（at 25℃）

* Temperature Detection Range: -40℃~125℃

* Temperature Accuracy: ±0.2℃@0℃-90℃(Typical)

* Communication: I2C

* Outline Dimension: 19x16mm

* Mounting Hole Size: 2mm

* Mounting Hole Pitch: 15mm

Resources

* Product wiki

Pinout

Name Description

SDA Data line

SCL Clock Line

GND Negative

VCC Positive

INT Alarm Interrupt

RST Reset

Package Contents

* 1x SHT31-F Digital Temperature and Humidity Sensor

* 1x 2.54mm 6-pin Single Row header