Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model	DHT20
Interface	I2C
Supply Voltage	1.8V - 5.5V DC
Temperature Range	-40°C to +80°C
Humidity Range	0% to 100% RH
Temperature Accuracy	±0.3°C
Humidity Accuracy	±2% RH
Response Time	< 2 seconds
Package Type	SMD Module with Header Pins
Compatibility	Arduino, ESP32, Raspberry Pi, STM32

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Fast response time

Impressed by how quickly this sensor updates compared to my old modules. The I2C communication is robust and I haven't experienced any bus errors yet. Great value for the price.

Anonymous

Mar 16, 2026

Rating: 5/5

Perfect for greenhouse monitoring

I use three of these in my automated greenhouse system. They handle the high humidity environment very well without drifting. The data logging has been consistent for months now.

Anonymous

Mar 15, 2026

Rating: 4/5

Great accuracy, easy wiring

The sensor works flawlessly with my ESP32. Wiring is simple since it only needs four connections. The only reason for 4 stars is that the library documentation could be slightly clearer for beginners.

Anonymous

Mar 11, 2026

Rating: 5/5

Much better than the old DHT11

Finally upgraded my weather station project from DHT11 to this DHT20. The I2C interface saves GPIO pins and the readings are significantly more stable. Highly recommended for any serious hobbyist.

Anonymous

Mar 05, 2026

Rating: 5/5

Reliable and compact

Small form factor fits perfectly inside my custom 3D printed enclosure. Readings match my professional hygrometer almost exactly. Will definitely buy more for other rooms.

Anonymous

Mar 05, 2026

Rating: 4/5

Solid choice for student projects

Bought a batch for our university robotics club. Students find them easy to integrate into their IoT prototypes. One unit had a bent pin upon arrival, but the rest worked perfectly.

5 FAQ

Q: Does it support 3.3V logic levels?

A: Yes, the DHT20 module operates on a voltage range of 1.8V to 5.5V, making it fully compatible with both 3.3V and 5V logic systems without a level shifter.

Q: Is there an Arduino library available for the DHT20?

A: Absolutely. You can use the popular 'Adafruit SHT31' library or specific 'DHT20' libraries available in the Arduino Library Manager. Both work seamlessly.

Q: What is the maximum cable length recommended for I2C connection?

A: For reliable I2C communication, we recommend keeping the cable length under 20-30 cm. For longer distances, consider using an I2C extender or buffer.

Q: Does this module come with pull-up resistors for the I2C lines?

A: Yes, the module includes onboard 4.7kΩ pull-up resistors for both SDA and SCL lines, so you can connect it directly to your microcontroller.

Q: Can this sensor be used outdoors directly?

A: The sensor chip itself is robust, but the PCB module is not waterproof. For outdoor use, please house it in a breathable, weatherproof enclosure to protect against rain and direct sunlight.

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