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Small rectangular green circuit board with white sensor chip and four-pin Grove connector

Seeed Studio

Seeed Studio Grove Temperature Humidity Sensor SHT31 I2C ±2% RH ±0.3°C 2.15V-5.5V -40°C to 125°C

SKU CH-EVVF-EYG2H

Measures temperature and humidity with ±2% RH and ±0.3°C accuracy over a 2.15V-5.5V range and -40°C to 125°C operating limits

  • TypeSensors
  • High accuracy with ±2% RH and ±0.3 °C temperature precision
  • I2C speeds up to 1 MHz with two selectable addresses
  • Fully calibrated digital output for immediate data acquisition
  • Wide 2.15 V to 5.5 V supply range suits many assemblies
  • Grove plug-and-play interface enables rapid integration

High-Accuracy Environmental Sensing

The Grove Temperature Humidity Sensor SHT31 delivers reliable relative humidity and temperature measurements with typical accuracies of ±2% RH and ±0.3°C. It operates across a wide supply range of 2.15V to 5.5V and functions in extreme conditions from -40°C to 125°C. The fully calibrated digital output ensures prompt data acquisition for smart home and industrial automation projects.

Upgrade From Basic Modules

This sensor replaces less accurate or analog-only temperature and humidity modules that require manual calibration or complex wiring. The jump is worth it when your application demands dependable ±2% RH precision and ±0.3°C temperature stability across a broad operating range. The I2C interface with speeds up to 1 MHz and selectable addresses also supersedes slower or single-address communication links.

Plug-and-Play Integration

The Grove connector enables effortless plug-and-play connectivity with compatible development boards, eliminating the need for breadboarding, soldering, or custom cabling. Its wide voltage compatibility from 2.15V to 5.5V allows direct connection to a variety of microcontroller logic levels. The compact module frees up PCB space and simplifies enclosure design for environmental monitoring, medical use, or automotive applications.

Highlights

  • High accuracy with ±2% RH and ±0.3 °C temperature precision
  • I2C speeds up to 1 MHz with two selectable addresses
  • Fully calibrated digital output for immediate data acquisition
  • Wide 2.15 V to 5.5 V supply range suits many assemblies
  • Grove plug-and-play interface enables rapid integration

Specifications

TypeSensors

Questions about this item

What Grove connector does the SHT31 sensor use for mounting?

The sensor uses a standard Grove 4-pin connector that plugs directly into any compatible Grove shield or base unit without soldering.

How do you select the I2C address on the SHT31 module?

The module provides two user-selectable I2C addresses chosen via the onboard address pads; set the desired address before powering the sensor.

When should the SHT31 sensor be replaced in continuous operation?

Replace the sensor if readings drift beyond the stated ±2% RH or ±0.3°C accuracy limits after prolonged exposure to the full -40°C to 125°C range.

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