Original Grove – Temperature & Humidity Sensor Pro (DHT22/AM2302) – PartsCountry

Description

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