Grove - Temperature & Humidity Sensor Pro (DHT22/AM2302)

This DHT22 sensor has a capacitive humidity sensor and a temperature sensor. The humidity sensor measures from 0 to 99.9% RH with ±2% accuracy, while the temperature sensor operates between -40 to 80°C with ±0.5°C accuracy. Compared with the DHT11, the DHT22 is more precise and has a wider measurement range. Thanks to its built-in 8-bit microcontroller, the DHT22 converts the analogue readings from both sensors into digital signals, allowing it to output temperature and humidity data through a single pin for easy use in your projects. It is compatible with Arduino (With a Grove - Base Shield) or Raspberry Pi (Only with the Grove-Base HAT) Features

* High accuracy and wide range of temperature and humidity measurements:

* Humidity: 0 to 99.9 %RH with ±2% accuracy

* Temperature: -40 to 80°C with an accuracy of ±0.5°C

* Standby current supply as low as 40uA

* Professional choice for relatively demanding applications: outperforms the basic DHT11D

* Digital output of sensor data and I²C interface make it more versatile

* Factory calibrated, easy to use, and backed by detailed wiki and documentation

* Product Number: Seeed 101020019

Specifications

Item Min Norm Max Unit

Input voltage (VCC) 3.3 - 6 V

I/O Logic Level - Based on VCC - V

Measuring Current Supply 1 - 1.5 mA

Standby Current Supply 40 - 50 uA

Measuring range (Humidity) 0.05 - 0.99 RH

Measuring range (Temperature) -40 - 80 °C

Accuracy (Humidity) - - ±2% RH

Accuracy (Temperature) - - ±0.5 °C

Resolution (Humidity) - - 0.001 RH

Resolution (Temperature) - - 0.1 °C

Repeatability (Humidity) - - ±0.3% RH

Repeatability (Temperature) - - ±0.2 °C

Long-term Stability - - ±0.5% RH/year

Signal Collecting Period - 2 - S

Respond Time 1/e(63%) 6 - 20 S

Signal pin mode - Digital - -

Resources

* Product Wiki

* Eagle Format

* PCB in PDF

* Schematic in PDF

Pinout

Package Contents

* 1x Grove - Temperature & Humidity Sensor Pro

* 1x Grove Cable