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AOSONG DHT22 Temperature Humidity Sensor
$3.5300
In stock
SKU
SEN-10-009
Volume discounts:
- +25 4 % $3.3800
- +100 6 % $3.3100
- +300 8 % $3.2400
- +500 10 % $3.1700
- +1000 12 % $3.0900
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ASAIR DHT11 Temperature Humidity Sensor Previous 
The ASAIR DHT22 Temperature Humidity Sensor is a digital sensor for measuring air temperature and humidity. It uses a capacitive humidity sensor and a thermistor with digital output on the data pin. The sensor works with a 1-wire interface and does not require an analog input. It is available in a 4-pin package and is designed for straightforward microcontroller reading. The DHT22 sensor provides measured values for temperature and humidity in a compact module format.
Features of ASAIR DHT22 Temperature Humidity Sensor - 3.3V-5.5V, 4 Pins
- Digital output
- Capacitive humidity sensing
- Thermistor temperature sensing
- 1-wire interface
- 4-pin package
- Direct microcontroller reading
Specifications of ASAIR DHT22 Temperature Humidity Sensor - 3.3V-5.5V, 4 Pins
- Brand: ASAIR
- Model: DHT22
- Input Voltage: 3.3V ~ 5.5V
- Maximum Operating Current: 2.5mA
- Temperature Range: -40°C ~ 80°C
- Temperature Accuracy: +-0.5°C
- Temperature Resolution: 0.1°C
- Humidity Range: 0% ~ 100% RH
- Humidity Accuracy: +-2% RH
- Humidity Resolution: 0.1%
- Sampling Rate: 0.5Hz
- Size: 25.1mm x 15.1mm x 7.7mm
- Pin Number: 4 Pins
- Interface: 1 wire
- Output Type: Digital
- VDD: power supply (3.5V - 5.5V)
- SDA: serial data
- NC: unused pin
- GND: ground
How to Use ASAIR DHT22 Temperature Humidity Sensor - 3.3V-5.5V, 4 Pins
- Connect VDD to the supply voltage within the specified range.
- Connect SDA to the serial data input.
- Connect GND to ground.
- Read the digital output with a microcontroller.
More Info
- The sensor uses a single digital data line.
- Each sensor needs its own data pin when multiple units are used.
- The pin order is VDD, SDA, NC, GND.
| Platform | Arduino Mega,Arduino Nano,Arduino Uno |
|---|---|
| Interface Type | Digital |
| Operating Voltage (V) | 3.3V ~ 5.5V |
| Operating Current (mA) | 2.5 mA |
| Operating Temp (°C) | -40 to 80 |
| Dimensions (mm) | 25.1 x 15.1 x 7.7 mm |
| Mounting Type | Pin Header |
| Output Type | Digital |
| Accuracy | ±0.5°C, ±2% RH |
| Resolution | 0.1°C, 0.1% |
| Measurement Range | -40°C ~ 80°C |
| Environmental Parameter | Temperature And Humidity |
| Probe Type | Temperature and humidity sensor |
| Chipset | DHT22 |
| Humidity Range | 0% ~ 100% RH |
| Relay Output | No |
| Humidity Accuracy | ±2% RH |
| Protocols | 1-Wire |
| Temp Accuracy | ±0.5°C |
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