Attributes

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
Operating Voltage	3.3V to 6V DC
Sampling Period	2 Seconds
Pin Count	4 Pins
Application	Arduino, Raspberry Pi, IoT Projects

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Easy to use for beginners

I was worried about wiring this up, but the module version makes it very simple. Plenty of tutorials online. It connected immediately and gave reasonable room temperature readings.

Anonymous

Mar 29, 2026

Rating: 5/5

Reliable data logging

Been running this on a Raspberry Pi for three weeks straight without a single dropout. The humidity calibration seems spot on compared to my dedicated hygrometer.

Anonymous

Mar 14, 2026

Rating: 5/5

Better than expected

Upgraded from an analog sensor and the difference in precision is night and day. The digital signal prevents noise interference which was a huge issue in my previous setup.

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect for my weather station

This DHT22 module works flawlessly with my Arduino Uno. The readings are consistent and much more stable than the cheaper DHT11 I used before. Setup was easy with the standard library.

Anonymous

Mar 02, 2026

Rating: 4/5

Solid choice for education

We bought ten of these for our student workshop. Most worked out of the box. One had a slightly loose pin, but we soldered it back on easily. Good build quality overall.

Anonymous

Mar 02, 2026

Rating: 4/5

Good accuracy, slow sampling

The sensor is accurate enough for monitoring my indoor plants. Just remember it only updates every 2 seconds, so don't expect real-time rapid changes. Great value for the price.

5 FAQ

Q: Do you provide sample code for Raspberry Pi?

A: Yes, we have Python libraries available on our GitHub repository that support Raspberry Pi GPIO. Check the product page links for documentation.

Q: What is the maximum cable length recommended for the data pin?

A: For reliable communication, we recommend keeping the cable length under 20 meters. Longer distances may require signal buffering or shielding.

Q: Is this compatible with 5V logic levels?

A: Yes, the operating voltage range is 3.3V to 6V, making it fully compatible with both 3.3V and 5V microcontrollers like Arduino and ESP8266.

Q: Can I use this sensor outdoors in the rain?

A: No, this specific module is not waterproof. It should be housed in a ventilated but water-proof enclosure if used outdoors to protect the electronics.

Q: Does this module come with a pull-up resistor installed?

A: Yes, most DHT22 modules include a 10k ohm pull-up resistor between the data and VCC pins, so you can connect it directly to your microcontroller.

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