{"product_id":"sht31-d-temperature-humidity-sensor-i2c-breakout-module","title":"SHT31-D Temperature \u0026 Humidity Sensor I2C Breakout – 3V 5V","description":"\u003ch2\u003eSHT31-D Temperature \u0026amp; Humidity Sensor Breakout Board\u003c\/h2\u003e\n\u003cp\u003eGet highly accurate environmental readings with the \u003cstrong\u003eSHT31-D Temperature and Humidity Sensor Breakout Module\u003c\/strong\u003e. Featuring Sensirion's industry-leading SHT31-D sensor, this compact breakout board delivers \u003cstrong\u003e±2% relative humidity\u003c\/strong\u003e and \u003cstrong\u003e±0.3°C temperature accuracy\u003c\/strong\u003e — making it one of the most precise and reliable sensors available for hobbyists, makers, and engineers alike.\u003c\/p\u003e\n\n\u003cp\u003eWith a true \u003cstrong\u003eI2C (IIC) interface\u003c\/strong\u003e, integration into your projects is straightforward. The board is compatible with both \u003cstrong\u003e3.3V and 5V systems\u003c\/strong\u003e, so it works seamlessly with popular platforms like Arduino, Raspberry Pi, and virtually any other microcontroller or single-board computer.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Accuracy:\u003c\/strong\u003e ±2% relative humidity and ±0.3°C temperature accuracy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrue I2C Interface:\u003c\/strong\u003e Simple two-wire communication with your microcontroller\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual I2C Address Support:\u003c\/strong\u003e Default address 0x44; tie ADR pin to Vin for 0x45\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Works with 2.5V to 5V DC power supplies\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnboard Pull-up Resistors \u0026amp; Capacitors:\u003c\/strong\u003e Supporting circuitry included — no extra components needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlert\/Interrupt Output (ALR):\u003c\/strong\u003e Configure event-based alerts via the datasheet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardware Reset Pin (RST):\u003c\/strong\u003e Pull to ground to reset the chip\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully Assembled \u0026amp; Tested PCB:\u003c\/strong\u003e Ready to use; just solder on the included header pins\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePin Overview\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVin\u003c\/strong\u003e – Power input (2.5V–5V DC). Match to your microcontroller's logic level (e.g., 5V for Arduino, 3.3V for Raspberry Pi)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGND\u003c\/strong\u003e – Common ground for power and logic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSCL\u003c\/strong\u003e – I2C clock pin (10K pull-up resistor to Vin included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSDA\u003c\/strong\u003e – I2C data pin (10K pull-up resistor to Vin included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eADR\u003c\/strong\u003e – I2C address selector (default: 0x44; connect to Vin for 0x45)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRST\u003c\/strong\u003e – Hardware reset (pull to GND to reset; 10K pull-up keeps chip active by default)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eALR\u003c\/strong\u003e – Alert\/Interrupt output for event-driven sensor notifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Fully assembled and tested SHT31-D PCB breakout board\u003c\/li\u003e\n  \u003cli\u003e1× Small piece of header (soldering required — beginner friendly!)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Use Cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino \u0026amp; Raspberry Pi weather stations\u003c\/li\u003e\n  \u003cli\u003eHome automation and climate monitoring\u003c\/li\u003e\n  \u003cli\u003eGreenhouse and indoor environment sensing\u003c\/li\u003e\n  \u003cli\u003eIoT environmental data logging\u003c\/li\u003e\n  \u003cli\u003eHVAC control and monitoring systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is the SHT31-D sensor breakout board compatible with Arduino?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The SHT31-D I2C humidity and temperature sensor breakout is fully compatible with Arduino boards. Since the board supports both 3.3V and 5V logic levels, it works with 5V Arduino boards (Uno, Mega, etc.) as well as 3.3V systems. Simply connect Vin to 5V, GND to ground, and the SCL\/SDA pins to your Arduino's I2C clock and data lines.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this sensor breakout support multiple I2C devices on the same bus?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The SHT31-D breakout offers two selectable I2C addresses — 0x44 (default) and 0x45 (by tying the ADR pin to Vin). This allows you to connect two SHT31-D modules on the same I2C bus without address conflicts, which is very useful for multi-zone temperature and humidity monitoring projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need to solder the header pins myself?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the board ships fully assembled and tested, but the header pins require soldering. Don't worry — it's a straightforward task that even beginners can complete in just a few minutes with a basic soldering iron.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the accuracy of the SHT31-D temperature and humidity sensor?\u003c\/h4\u003e\n\u003cp\u003eA: The SHT31-D sensor offers industry-leading accuracy of ±2% relative humidity and ±0.3°C for temperature. This makes it one of the most precise environmental sensors available for microcontroller-based projects, weather stations, and IoT applications.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the SHT31-D sensor breakout board compatible with Arduino?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The SHT31-D I2C humidity and temperature sensor breakout is fully compatible with Arduino boards. Since the board supports both 3.3V and 5V logic levels, it works with 5V Arduino boards (Uno, Mega, etc.) as well as 3.3V systems. 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