Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | DHT22 / AM2302 |
| Interface | Single-Bus Digital |
| Temperature Range | -40°C to +80°C |
| Humidity Range | 0% to 100% RH |
| Temperature Accuracy | ±0.5°C |
| Humidity Accuracy | ±2% RH |
| Supply Voltage | 3.3V to 6V DC |
| Sampling Period | 2 seconds |
| Board Type | Breakout Module with Pull-up Resistor |
| Pin Count | 3 Pins (VCC, Data, GND) |
Anonymous
Mar 16, 2026
Rating: 5/5
Great for greenhouse monitoring
I bought three of these to monitor different zones in my greenhouse. They handle the humidity well without drifting. The code libraries available online make integration trivial.
Anonymous
Mar 16, 2026
Rating: 4/5
Solid build quality
The PCB looks clean and the soldering points are clear. One unit took a few tries to get reading correctly, but after reseating the wires, it has been stable for weeks.
Anonymous
Mar 16, 2026
Rating: 4/5
Good accuracy, slow sampling
The sensor is accurate as advertised, but remember it can only sample every 2 seconds. If you need faster updates, this isn't the right choice. For general monitoring, it is excellent value.
Anonymous
Mar 13, 2026
Rating: 5/5
Best bang for your buck
Compared to more expensive industrial sensors, this offers 95% of the performance for a fraction of the cost. Ideal for hobbyists and prototyping.
Anonymous
Mar 04, 2026
Rating: 5/5
Reliable for university projects
Used this for a final year IoT project. It connected easily to an ESP8266 and sent data to the cloud without issues. Much better range than the blue DHT11 sensor.
Anonymous
Mar 03, 2026
Rating: 5/5
Perfect for home weather stations
This DHT22 module works flawlessly with my Arduino Uno. The included breakout board makes wiring incredibly easy since the pull-up resistor is already onboard. Readings are stable and match my dedicated hygrometer closely.
Q: Is the pull-up resistor included on the board?
A: Yes, this adapter board comes with a built-in 10k ohm pull-up resistor, so you do not need to add external components for basic operation.
Q: What is the difference between DHT11 and DHT22?
A: The DHT22 (AM2302) offers higher accuracy and a wider temperature and humidity range compared to the DHT11. However, the DHT22 has a slower sampling rate of 2 seconds versus 1 second for the DHT11.
Q: Does this module work with 5V logic levels?
A: Yes, the module supports a voltage range of 3.3V to 6V, making it compatible with both 3.3V and 5V microcontrollers like Arduino and ESP32.
Q: Which library should I use for Raspberry Pi?
A: For Raspberry Pi, we recommend using the Adafruit CircuitPython DHT library or the gpiozero library, both of which have excellent support for the DHT22 sensor.
Q: Can I use this outdoors in the rain?
A: No, the sensor itself is not waterproof. While it can measure high humidity, it must be housed in a breathable enclosure to protect it from direct water exposure.
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