DHT22 Temperature and Humidity Sensor Module for Arduino Projects

Great for Weather Station projects

A compact 5V temperature and humidity sensor add-on for Arduino. A product for Arduino that works with official Arduino boards. Suitable for Arduino SCM.

The device has an output calibrated digital signal. It utilizes exclusive digital-signal-collecting-technique and humidity sensing technology, assuring its reliability and stability. Its sensing elements are connected with 8-bit single-chip computer. Every sensor of this model is temperature compensated and calibrated in accurate calibration chamber and the calibration-coefficient is saved in type of programme in OTP memory, when the sensor is detecting, it will cite coefficient from memory. Small size & low consumption & long transmission distance (20m) enable device to be suited in all kinds of harsh application occasions. Single-row packaged with four pins, making the connection very convenient.

 

Features

• Full range temperature compensated
• Relative humidity and temperature measurement
• Calibrated digital signal
• Outstanding long-term stability
• Extra components not needed
• Long transmission distance
• Low power consumption
• 4 pins packaged and fully interchangeable

Specifications

• Power supply: 3.3-6V DC
• Output signal: Digital signal via single-bus
• Sensing element: Polymer humidity capacitor & DS18B20 for detecting temperature
• Measuring range: humidity 0-100%RH; temperature -40~125°C
• Accuracy: humidity +-2%RH(Max +-5%RH); temperature +-0.2°C
• Resolution or sensitivity: Humidity 0.1%RH; temperature 0.1°C
• Repeatability: Humidity +-1%RH; Temperature +-0.2°C
• Humidity hysteresis: +-0.3%RH
• Long-term Stability: +-0.5%RH/year
• Sensing period: Average: 2s
• Interchangeability: Fully interchangeable

  *Specifications are subject to change without notice.

Please download above PDF for wiring instructions and sample code

Library Files (click below to download)

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