DHT22 / AM2302 Temperature & Humidity Sensor Module
$4.99 NZD
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$4.99 NZD
DHT22 / AM2302 Temperature & Humidity Sensor Module
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Urban $40
Rural $60
High-accuracy DHT22 / AM2302 digital temperature and humidity sensor module for Arduino, ESP32, Raspberry Pi, ESPHome, and Home Assistant projects. Offers significantly better accuracy and wider operating range than the popular DHT11 sensor.
- Temperature & humidity sensing
- Digital single-bus output
- Built-in pull-up resistor
- 3.3V & 5V compatible
- Ideal for smart home projects
Quick Start
1
Connect power
Wire VCC to 3.3V or 5V and connect GND.
2
Connect DATA pin
Use any digital GPIO pin on Arduino or ESP32.
3
Install library
Use the standard DHT sensor library or native ESPHome support.
4
Read live data
Begin monitoring temperature and humidity instantly.
Please note: This module includes the onboard pull-up resistor already fitted for plug-and-play operation.
Specifications
ModelDHT22 / AM2302
Operating Voltage3.3V – 5.5V DC
Output TypeDigital Single-Bus
Temperature Range-40°C to 80°C
Temperature Accuracy±0.5°C
Humidity Range20–90% RH
Humidity Accuracy±2% RH
Sampling Rate1 Reading Every 2 Seconds
Signal DistanceUp to 20 Metres
PinsVCC / DATA / GND
PCB Size40 × 23mm
Weight4g
Please note: Compatible with both 3.3V and 5V microcontroller platforms.
How It Works
1
Internal sensor measures environment
The DHT22 continuously monitors surrounding temperature and humidity.
2
Digital conversion
Sensor data is processed internally and transmitted digitally.
3
Single-wire communication
Only one DATA pin is required for communication.
4
Microcontroller reads values
Arduino, ESP32, or Raspberry Pi receives live readings for automation or display.
Please note: Recommended minimum interval between readings is 2 seconds.
What's Included
1 ×DHT22 / AM2302 Sensor Module
ConnectorPre-soldered 3-pin header
Please note: Ready to connect directly to breadboards and Dupont jumper wires.
Common Uses
Home Assistant & ESPHome projects
Weather stations
Greenhouse monitoring
HVAC automation
Server room monitoring
Environmental data logging
Please note: Popular for both beginner and advanced smart home projects.
Common Questions
What is the difference between DHT11 and DHT22?
DHT22 offers significantly better accuracy, wider temperature range, and improved humidity sensing compared to DHT11.
Does this module include the pull-up resistor?
Yes. The pull-up resistor is already installed onboard, so no external resistor is required.
Will it work with ESPHome and Home Assistant?
Yes. DHT22 sensors are natively supported by ESPHome and integrate easily into Home Assistant dashboards.
Please note: Compatible with Arduino IDE, MicroPython, CircuitPython, and ESPHome environments.