Technical summary
This Adafruit humidity sensor is based on the HTU21D chip and measures relative humidity from 5 to 95% and temperature from -30°C to +90°C. It communicates with an Arduino-type or compatible microcontroller over the I2C protocol.
A tutorial for Arduino is available.
Supply: 3 to 5 Vdc
Compatible with 3.3V and 5V systems
Measurement range:
- humidity: 5 to 95% RH
- temperature: -30 to +90°C
Accuracy:
- humidity: ±2%
- temperature: ±1°C
I2C interface (fixed address 0x40)
Dimensions: 18 x 17 x 12 mm
