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SI7021 sensor

Information

The Si7021 I2C Humidity and Temperature 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. The Si7021 offers an accurate, low-power, factory-calibrated digital solution ideal for measuring humidity, dew-point, and temperature, in applications ranging from HVAC/R and asset tracking to industrial and consumer platforms.

Features

  • Precision Relative Humidity Sensor ± 3% RH (max), 0–80% RH
  • High Accuracy Temperature Sensor ±0.4 °C (max), –10 to 85 °C
  • 0 to 100% RH operating range
  • Up to –40 to +125 °C operating range
  • Wide operating voltage – (1.9 to 3.6 V)
  • Low Power Consumption – 150 μA active current

More information …

Setup

In order to use the SI7021 sensor use the following settings:

Mandatory

Hardware
SI7021 sensor

Types : humidity, temperature

Address
<I2C Address>,[I2C Bus] where the I2C bus is optional
Ex: 0x40

Other settings can be found at the sensor setup information

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