SHT30 Digital Temperature and Humidity Sensor Module (I2C)
High-Precision Environmental Sensing Module for Arduino, ESP32 & IoT Projects
The SHT30 Digital Temperature and Humidity Sensor Module is a high-precision, industrial-grade environmental sensor built on Sensirion’s proven CMOSens® technology. Operating via a standard I2C (IIC) digital interface, this compact sensor module delivers fully calibrated, linearized digital outputs with exceptional accuracy, low power consumption, and high immunity to external noise.
Whether you are building an automated weather station, an HVAC monitoring node, or a smart agricultural system, the SHT30 provides reliable, drift-free environmental data across a wide operating voltage range.
Key Features
High Measurement Accuracy: Delivers typical accuracies of ±2% RH for relative humidity and ±0.2°C for temperature.
I2C Digital Output: Simple 2-wire digital communication interface supporting standard (100 kHz) and fast (400 kHz) bus speeds.
Fully Calibrated & Linearized: Factory-calibrated digital output eliminates the need for complex signal conditioning or calibration code.
Selectable I2C Addresses: Features configurable ADDR pin to allow multiple sensors on the same I2C bus.
Integrated Heater Option: Built-in internal heating element used to clear condensation and verify sensor integrity in high-humidity environments.
Wide Voltage Compatibility: Runs reliably on both 2.4V to 5.5V supply levels, interfacing seamlessly with 3.3V (ESP32, Raspberry Pi) and 5V (Arduino) boards.
Typical Applications
Smart Home & HVAC Systems: Thermostat control, air quality monitoring, and automated dehumidifiers.
IoT Weather Stations: Outdoor/indoor climate tracking and wireless telemetry nodes.
Agriculture & Greenhouses: Precise microclimate and soil-surface humidity monitoring.
Environmental Enclosures: Incubator monitoring, server room monitoring, and cold-chain logistics logging.
Technical Specifications
| Parameter | Specification |
| Sensor IC | Sensirion SHT30 |
| Communication Interface | I2C (IIC) Serial Bus |
| Operating Voltage | 2.4V – 5.5V DC (3.3V & 5V compatible) |
| Humidity Range | 0% to 100% RH |
| Humidity Accuracy | ±2% RH (typical at 10–90% RH) |
| Temperature Range | -40°C to +125°C |
| Temperature Accuracy | ±0.2°C (typical at 0–65°C) |
| Response Time | 8 seconds ($tau63\%$) |
| Default I2C Address | 0x44 (Can be configured to 0x45 via ADDR pin) |
Pinout Connection Guide
| Pin Name | Function | Connection |
| VCC | Power Input | Connect to 3.3V or 5V DC |
| GND | Ground | Connect to System Ground (0V) |
| SCL | I2C Serial Clock | Connect to Microcontroller SCL Pin |
| SDA | I2C Serial Data | Connect to Microcontroller SDA Pin |
| ALR / INT | Alert / Interrupt Pin | Optional interrupt output for threshold triggering |
| ADDR | Address Select | Connect to GND for 0x44 (Default) or VCC for 0x45 |
Package Includes
1 × SHT30 Digital Temperature and Humidity Sensor Module
1 × Male Header Pin Strip