GY-21 HTU21D Temperature and Humidity Sensor Module - I2C Interface

The GY-21 HTU21D Temperature and Humidity Sensor Module is a compact sensor module for measuring humidity and temperature. It uses the I2C interface and includes onboard memory for factory calibration data. This allows the module to be used without manual calibration or software changes. The module is suitable for electronics and robotics projects that require humidity and temperature measurement. It is designed as a small and accurate solution for integrated sensing applications.

Features of GY-21 HTU21D Temperature and Humidity Sensor Module - I2C Interface

• Compact sensor module
• Temperature and humidity measurement
• I2C communication
• Factory-calibrated memory
• No manual calibration required

Specifications of GY-21 HTU21D Temperature and Humidity Sensor Module - I2C Interface

• Power Supply: 3 to 5V DC
• Humidity Accuracy: ±3% RH in the 0 to 80% range
• Humidity Range: 0 to 100% RH
• Operating Temperature: -40°C to +125°C
• Sensor Operating Voltage: 1.9 to 3.6V DC
• Active Current: 150µA
• Interface: I2C
• Dimensions: 10x13 mm

How to Use GY-21 HTU21D Temperature and Humidity Sensor Module - I2C Interface

1. Connect the module to a compatible circuit with the correct power supply.
2. Wire the I2C interface to the controlling microcontroller.
3. Read humidity and temperature data from the sensor.

More Info

• Factory calibration data is stored in onboard memory.
• The module is designed for direct use without calibration changes.