The SHT30-D sensor has an excellent ±2% relative humidity and ±0.5°C accuracy for most uses. Unlike earlier SHT sensors, this sensor has a true I2C interface. The enclosed box is a Sensiron SHT-30 digital sensor (much like our breakout here or this weather-proof mesh sensor) but with the 4 data/power wires brought out to bare wires. Any SHT-3x code for a microcontroller will work, we are big fans of this sensor. Check out the tutorial for Arduino and CircuitPython/Python, and more! The 1 meter long cable has four wires: Red = VCC (2.15-5VDC), Black = Ground, Yellow = I2C Clock, White = I2C Data. Simply connect the red and black wires to your microcontroller or microcomputer power + ground. Connect the yellow wire to SCL, white wire to SDA of your controller's I2C port. There are built in 10K resistors so you don't need external I2C pull-ups. Compared to the DHT22/AM2302, this sensor is more precise, more accurate, works in a bigger range of temperature/humidity and is less expensive! We strongly recommend using this instead of DHT sensors, they are very annoying to use and this sensor is a true I2C sensor so it is universally supportable. We have an Adafruit Learning System guide Arduino & CircuitPython code, datasheets and more for SHT3x sensors! Technical Details * Sensor module dimensions: 59mm x 26.3mm x 13.4mm * Wire length: ~22.8cm / ~9" * Power: 2.15~5.5V * Humidity: 0~100%RH * Temperature: -40~125ºC * Precision: +/- 2%RH ~ +/- 0.2ºC * Output: Digital IIC * Diagram * Datasheet https://elecena.pl/product/24021367/sht30-temperature-and-humidity-sensor-wired-enclosed-shell 2023-08-09 https://elecena.pl/product/24021367/sht30-temperature-and-humidity-sensor-wired-enclosed-shell 2023-12-27 https://elecena.pl/product/24021367/sht30-temperature-and-humidity-sensor-wired-enclosed-shell 2024-09-19 https://elecena.pl/product/24021367/sht30-temperature-and-humidity-sensor-wired-enclosed-shell 2024-11-29 https://elecena.pl/product/24021367/sht30-temperature-and-humidity-sensor-wired-enclosed-shell 2024-11-30 https://elecena.pl/product/24021367/sht30-temperature-and-humidity-sensor-wired-enclosed-shell 2025-11-28 https://elecena.pl/product/24021367/sht30-temperature-and-humidity-sensor-wired-enclosed-shell 2025-11-29