Features / Specs
- Model: GY-21
- Sensor Chip: Sensirion SHT21
- Operating Voltage Range: 3.3 – 5.0VDC (Onboard 3.3V Regulator)
- Comms Interface: I2C (Up to 400kHz)
- Comms Logic Level: Same as supply voltage (Onboard level-shifter)
- Relative Humidity Measurement Range: 0 – 100%RH
- Relative Humidity Measurement Accuracy (Typical): ±2%RH
- Relative Humidity Measurement Response Time (T63%): 8 seconds
- Temperature Measurement Range: -40 to +125°C
- Temperature Measurement Accuracy (Typical): ±0.3°C
- Temperature Measurement Response Time (T63%): 5 seconds
- Max Operating Current (Only Sensor): 330μA
- Header Pin Pitch: 2.54mm (Breadboard Compatible)
Pin Description
- VIN-> Supply Voltage (3.3 – 5.0VDC)
- GND-> Ground
- SCL-> I2C Serial Clock
- SDA-> I2C Serial Data