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Home / Computer Hardware, Monitors & Peripherals / DHT22 Single-Bus Digital Temperature and Humidity Sensor 2302 Module Electronic Building Blocks

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage 3.3V - 5.5V DC
Temperature Range -40°C to 80°C
Humidity Range 0% to 100% RH
Temperature Accuracy ±0.5°C
Humidity Accuracy ±2% RH
Interface Type Single-Wire Digital
Sampling Period 2 Seconds
Pin Configuration 4-Pin Header
Body Material Plastic Housing
Compatible Platforms Arduino, Raspberry Pi, ESP8266

5 reviews

A

Anonymous

Apr 15, 2026

Rating: 5/5

Reliable and cheap

Best value for money for basic humidity and temp monitoring. Verified purchases work well.

A

Anonymous

Mar 26, 2026

Rating: 3/5

Needed pull-up resistor

Didn't work initially until I added a 10k resistor between data and VCC. Might be confusing for beginners.

A

Anonymous

Mar 23, 2026

Rating: 5/5

Great for weather station

I used three of these for my backyard weather project. Consistent readings across all units.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Works perfectly with Arduino

Easy to wire up and the library examples worked straight out of the box. Readings seem accurate compared to my home thermostat.

A

Anonymous

Jan 27, 2026

Rating: 4/5

Good sensor, slow sampling

Does the job well. Just remember it only updates every 2 seconds so don't expect real-time rapid changes.

5 FAQ

Q: Does this work with 3.3V logic?

A: Yes, it operates between 3.3V and 5.5V.

Q: Can I use this outdoors?

A: It is not waterproof. You need an enclosure for outdoor use.

Q: How many sensors on one pin?

A: You can daisy-chain multiple sensors on one data line with unique addressing logic.

Q: What is the wire length?

A: The module pins are standard 0.1 inch spacing. Cable not included.

Q: Is there a library for ESP32?

A: Yes, the DHT sensor library by Adafruit supports ESP32.

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