Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V - 5.5V DC |
| Signal 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 |
| Sampling Period | 2 Seconds |
| Pin Header Type | 4-Pin 2.54mm Pitch |
| Module Dimensions | 15mm x 25mm x 8mm |
| Compatible Platforms | Arduino, ESP8266, Raspberry Pi |
Anonymous
Apr 14, 2026
Rating: 4/5
Good sensor, slow update rate
Accuracy is decent for the price. Just remember it can only sample every 2 seconds, so do not expect real-time rapid changes.
Anonymous
Feb 15, 2026
Rating: 5/5
Perfect for Arduino Weather Station
Works flawlessly with the standard DHT library. Readings are consistent compared to my standalone hygrometer. Great value for money.
Anonymous
Feb 10, 2026
Rating: 5/5
Works on Raspberry Pi GPIO
Connected directly to GPIO4 with a pull-up resistor. Python script reads data without issues. Highly recommend for home automation.
Anonymous
Feb 03, 2026
Rating: 5/5
Reliable for indoor monitoring
Been running this in my server room for a month. No drift noticed. Stable connection over long wires too.
Anonymous
Jan 20, 2026
Rating: 3/5
Pin was slightly bent
Sensor works fine after I straightened the pin. Packaging could be better to protect the header pins during shipping.
Q: Do I need a pull-up resistor?
A: Yes, a 10k ohm pull-up resistor between the data pin and VCC is recommended for stable communication.
Q: Which library should I use for Arduino?
A: We recommend the Adafruit DHT sensor library available in the Arduino Library Manager.
Q: Can I use this with 3.3V logic?
A: Yes, the DHT22 operates between 3.3V and 5.5V, making it compatible with most 3.3V microcontrollers.
Q: What is the maximum cable length?
A: For reliable data, keep the cable under 20 meters. Shielded cable is recommended for longer distances.
Q: Is this sensor waterproof for outdoor use?
A: No, this module is not waterproof. Please house it in a weatherproof enclosure if used outdoors.
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