7Semi SHT21 Humidity and Temperature Sensor Breakout I2C

7Semi
SKU
ES-12125

Measures temperature and relative humidity with digital I²C output.

SHT21 Temperature and Humidity Sensor I2C Breakout

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24mm x 19mm x 4.76mm

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About this product

The 7Semi SHT21 Humidity and Temperature Sensor Breakout is a compact environmental sensing module designed to measure temperature and relative humidity. It communicates through a simple I²C interface with a default address of 0x40, making it easy to integrate with microcontrollers and embedded systems. The module supports a wide 2.1V to 5.5V supply range and includes an integrated heater for improved sensor operation in demanding conditions. Its compact size makes it suitable for HVAC systems, environmental monitoring, IoT devices, data loggers, and automation applications.

Key Features

  • Temperature & Humidity Sensing: Measures both environmental temperature and relative humidity.
  • Digital I²C Interface: Provides simple communication with microcontrollers and embedded systems.
  • Default I²C Address 0x40: Allows straightforward integration into I²C-based projects.
  • Wide Supply Range: Operates from 2.1V to 5.5V for flexible system compatibility.
  • Integrated Heater: Supports reliable sensing performance in challenging humidity conditions.
  • Wide Humidity Monitoring: Supports measurements from 0 to 100% RH.
  • Compact Breakout Design: Small 24mm × 19mm × 4.76mm form factor for space-constrained applications.
  • Easy Integration: Suitable for environmental monitoring, HVAC, IoT, automation, and data-logging systems.
Resources

Datasheet of SHT21

SHT2X-Breakout-Board-3D-STEP-file

User Guide and Sample Code etc.

Arduno Library

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