Introduction
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.
Applications
- HVAC/R
- Thermostats/humidistats
- Indoor weather stations
- Automotive climate control and defogging
Specifications
- 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
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
Connection Diagram
Sample Code
- Open "Serial Monitor" of Arduino, the temperature and humidity will be displayed:
FAQ
For any questions, advice or cool ideas to share, please visit the DFRobot Forum.