GY-21 HTU21 Sensor Module Humidity Sensor

Feature:

The HTU21D is a low-cost, easy to use, highly accurate, digital humidity and temperature sensor.
This sensor is ideal for environmental sensing and data logging and perfect for a weather stations for humidity control systems.
All you need is two lines for I2C communication and you'll have relative humidity readings and very accurate temperature readings as a bonus!

Description:

Voltage: 2.1V to 3.6V
Low power consumption: -0.15uA
I2C interface
Resolution: 0.04%RH, 0.02°C
Accuracy: ±2%RH, ±3°C