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Si7021 Humidity and Temperature Module

SKU: TOY0054

The module integrates Si7021 Humidity and Temperature sensor. The sensor is a monolithic CMOS IC integrating humidity and temperature sensor elements, an analog-to-digital converter, signal processing, calibration data, and an I2C Interface. It is low drift and hysteresis, and excellent long term stability.

Angled shot of Si7021 sensor for Arduino-DFRobot product sku:TOY0054 image.

Downloadable Resources

  • Docs
  • Tech Specs

    • Specification

    Parameter Value
    Operating Voltage 1.9 - 3.6V (recommend 3.3V)
    Standby Current 60nA
    Temperature Range -40 - 85℃ (recommend -10 - 60℃)
    Temperature Accuracy ±0.4℃ (-10 - 85℃)
    Humidity Range 0-100%RH (recommend 20% - 80%RH)
    Humidity Accuracy ±3%RH (0-80%RH)
    Temperature Conversion Time 7ms
    Humidity Conversion Time 17ms (RH measurement will automatically initiate a temperature measurement)
    Interface I2C, Gadgeteer and soldering pad with 2.5mm spacing
    Size 32X32mm
    Mounting hole inner diameter is 3.2mm, spacing is 25mm

    Pinout

    Si7021_pin.png

    Soldering pad with 2.5mm spacing:

    • SDA : I2C data line
    • SCL : I2C clock line
    • GND : Power negative
    • 3.3V: Power positive

    Gadgeteer Socket："I" x2

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