ASAIR AHT21B Temperature and Humidity Sensor Module - I2C

A small temperature and humidity sensor in one.

Specifications:

• Supply voltage: 2.2 - 5.5V DC
• Signal voltage: 2.2 - 5.5V (same as supply voltage)
• Communication: I2C
  • I2C address: 0x38 (not changeable)
  • I2C pull-up resistors present: Yes
• Temperature sensor:
  • Measuring range: -40 - 80°C
  • Accuracy: ±0.5°C (maximum ±1.8°C on full range)
  • Smallest resolution: 0.01°C
• Humidity sensor:
  • Measuring range: 0 - 100% RH
  • Accuracy: ±3% RH (maximum ±7% on full range)
  • Smallest resolution: ±0.024% RH
• Pin distance: 2.54mm
• Dimensions PCB: 12 x 12mm

Pinout (left to right from the front):

• VDD: Supply voltage
• SDA: Serial Data (I2C)
• GND: Ground
• SCL: Serial Clock (I2C)

Package contents:

• 1x AHT21B Temperature and Humidity Sensor Module

See the datasheet under the tab "Downloads" for more information.

See the following page for a library for this sensor: Adafruit AHTX0