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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.
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