Fermion: SHT31 Digital Temperature & Humidity Sensor (Breakout)

DFRobot SHT31 Digital Temperature and Humidity Sensor is a compact environmental sensing module built around the Sensirion SHT31-DIS chip. Leveraging advanced CMOSens® technology, this digital Temperature & Humidity Sensor breakout board integrates capacitive humidity sensing and band‑gap temperature measurement into a single high‑reliability device. The sensing module delivers stable measurements with low power consumption, fast response speed, and strong resistance to electromagnetic interference. I2C communication enables seamless integration with common development platforms including Arduino, micro:bit, and ESP32. Precise digital environmental monitoring becomes accessible for IoT systems, automation projects, and intelligent infrastructure.

CMOSens® Precision Environmental Sensing

Built on Sensirion’s CMOSens® integrated sensing architecture, this digital climate monitoring board combines capacitive humidity detection and band‑gap temperature measurement on a single chip. The integrated design enables highly stable performance and excellent long‑term reliability. Typical humidity accuracy reaches ±2%RH across the full 0–100%RH range at 25°C, while temperature measurement achieves ±0.2°C accuracy between 0°C and 90°C. Such performance supports reliable environmental monitoring in demanding IoT and automation scenarios.

Low Power Operation with Fast Response

This compact environmental sensing module maintains very low operating current while delivering rapid measurement response. Efficient power characteristics make the board suitable for battery‑powered monitoring nodes, wireless sensor networks, and distributed IoT deployments. Strong anti‑interference capability improves measurement stability in electrically noisy environments such as industrial automation systems, building infrastructure, and smart equipment installations.

Flexible I2C Interface for Popular Controllers

An I2C digital communication interface simplifies integration with common embedded platforms and development boards. Support for both 3.3V and 5V logic levels allows direct connection to widely used microcontroller ecosystems. This sensor breakout therefore works smoothly with Arduino controllers, micro:bit educational boards, ESP32 IoT platforms, and many other I2C-compatible systems used in prototyping, automation design, and intelligent sensing networks.

Figure: SHT3x digital temperature and humidity sensor family comparison

Figure: SHT31 sensor module appearance and interface layout

This compact digital humidity and temperature sensing board fits a wide variety of environmental monitoring applications. Typical deployments include urban climate monitoring systems, intelligent buildings, smart home devices, agricultural storage environments, and breeding or cultivation systems where stable and accurate environmental data supports automated decision‑making.