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DHT22/AM2302 Digital Temperature and Humidity Sensor
$0.8900
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SKU
SEN-10-095
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AM2301A/DHT21 Digital Temperature and Humidity Sensor Previous 
The DHT22/AM2302 Digital Temperature and Humidity Sensor is a digital sensor for measuring air temperature and humidity. It provides a calibrated digital output through a single-wire data connection. The sensor uses a capacitive humidity sensor and a thermistor for measurement. It also includes an internal microcontroller system and OTP memory for calibrated data delivery. The DHT22/AM2302 Digital Temperature and Humidity Sensor is designed for 3.3V to 5V operation and supports direct digital signal output on the data pin.
Features of DHT22/AM2302 Digital Temperature and Humidity Sensor - 3.3V-5V
- Digital single-wire output
- Fully calibrated output
- Capacitive humidity sensing
- Thermistor temperature sensing
- Internal microcontroller
- OTP memory
- Low-cost sensor
- Single data pin for readings
Specifications of DHT22/AM2302 Digital Temperature and Humidity Sensor - 3.3V-5V
- Voltage: 3.3 to 5V
- Type of communication: Digital single wire
- Humidity measurement range: 0-100%
- Humidity resolution: 0.1%
- Response time: 2S
- Temperature measurement range: +80 ~ 40-
- Temperature resolution: 0.1C
- Output accuracy: 0.5 degrees for temperature and 2 percent for humidity
- Maximum current use during conversion: 2.5mA
- Sampling rate: no more than 0.5 Hz
- Body size: 27mm x 59mm x 13.5mm
- Pin count: 4 pins
- Pin spacing: 0.1"
- Weight: 2.4g
How to Use DHT22/AM2302 Digital Temperature and Humidity Sensor - 3.3V-5V
- Connect the first pin to 3.3V to 5V power.
- Connect the second pin to the data input pin.
- Connect the rightmost pin to ground.
- Read data with careful timing and allow up to 2 seconds between new readings.
More Info
- Not compatible with Dallas One Wire.
- Each sensor needs its own data pin when using multiple sensors.
- Soldering temperature should be below 260 degrees Celsius.
- Do not use in places with high humidity.
- Keep away from strong light sources and ultraviolet light.
| Platform | Arduino Mega,Arduino Nano,Arduino Uno,Raspberry Pi 3,Raspberry Pi 4,Raspberry Pi 5 |
|---|---|
| Interface Type | Digital |
| Operating Voltage (V) | 3.3V, 5V |
| Operating Current (mA) | 2.5 |
| Operating Temp (°C) | -40 to 80 |
| Dimensions (mm) | 27mm x 59mm x 13.5mm |
| Mounting Type | Pin Header |
| Output Type | Digital |
| Accuracy | 0.5°C for temperature and 2% for humidity |
| Resolution | 0.1C, 0.1% |
| Response Time | 2S |
| Measurement Range | -40 to +80°C |
| Environmental Parameter | Temperature And Humidity |
| Probe Type | Temperature and humidity sensor |
| Weight (g) | 2.4g |
| Chipset | AM2302 |
| Humidity Range | 0-100% |
| Relay Output | No |
| Humidity Accuracy | 2% |
| Protocols | Digital single-wire |
| Temp Accuracy | 0.5°C |
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