The SHT31 sensor module provides accurate temperature and humidity measurements. Using the I²C interface and operating from 2.4–5.5 V, it is easy to integrate into microcontrollers such as Arduino, ESP32, and Raspberry Pi. Ideal for smart home projects, weather monitoring, and IoT applications.
Features
- Humidity Range: 0–100 %RH
- Accuracy: ±2 %RH / ±0.3 °C
- Temperature Range: -40 °C ~ +125 °C
- Interface: I²C digital output
- Operating Voltage: 2.4–5.5 VDC
- Dimensions: 17 × 12 mm with 4-pin header (VCC, GND, SDA, SCL)
- Applications: Smart home, weather stations, climate control, IoT devices
- VCC → Power supply input (works from 2.4 V – 5.5 V)
- GND → Ground (0 V reference)
- SDA → Serial Data (I²C data line, bidirectional)
- SCL → Serial Clock (I²C clock line, input)
Standard I²C requires pull-up resistors (usually 4.7 kΩ) on SDA and SCL. Some breakout boards already include them, but you should confirm. Connects easily to microcontrollers like Arduino (A4 = SDA, A5 = SCL), ESP32 (configurable pins), Raspberry Pi (GPIO 2 = SDA, GPIO 3 = SCL). Module size is 17 mm × 12 mm, and the 4-pin header follows a straight-line format.
