Humidity & Temperature Sensor DHT22 RHT03 Arduino PIC Microcontrollers

Here we have a DHT-22 (also known as RHT03) Temperature and Humidity Sensor featuring a calibrated digital signal output with the temperature AND humidity sensor complex.

The sensor is calibrated and doesn't require extra components so you can get right to measuring relative humidity and temperature.

A high-performance 8-bit microcontroller should be connected in order to get the most out of the sensor.

• 3.3-6V Input
• 1-1.5mA measuring current
• 40-50 uA standby current
• Humidity from 0-100% RH
• -40 - 80 degrees C temperature range
• +-2% RH accuracy
• +-0.5 degrees C
• long-term stability
• Reliability
• premium quality
• fast response times
• anti-interference
• high cost vs performance advantages.
• Relative humidity and temperature measurement
• The single-wire serial interface system
• signal transmission distance up to 20 meters
• extremely accurate humidity calibration chamber.

• Arduino Library
• Tutorial
• PICAXE Examples
• Full Datasheet

The DHT22's small size, low power, and array of features make it perfect for a variety of applications.

Typically you may want to wire your DHT22 as below.