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Small rectangular green circuit board with white sensor module and four-pin Grove connector

Seeed Studio

Seeed Studio Grove Temperature Humidity Sensor V2.0 DHT20

SKU CH-3TBX-SQ81A

Digital sensor measures temperature and humidity with ±0.5 °C and ±3 % RH accuracy over -40 to +80 °C and 0 to 100 % RH

  • TypeSensors
  • High accuracy ±0.5 °C temperature and ±3 % RH humidity
  • Wide measurement range −40 to +80 °C and 0 to 100 % RH
  • Digital I²C output simplifies integration with microcontrollers
  • Factory calibrated for stable long-term performance
  • Upgraded ASIC and MEMS design improves robustness in harsh conditions

Grove DHT20 Sensor Overview

The Seeed Studio Grove Temperature Humidity Sensor V2.0 DHT20 is a digital sensor module designed for environmental monitoring. It provides calibrated temperature and relative humidity readings through a standard Grove connector. This unit suits engineers, hobbyists, and system integrators building IoT nodes, data loggers, or automation systems that require reliable climate data.

Ideal Uses and Limitations

The sensor fits projects needing a wide measurement span from -40 to +80 °C and 0 to 100 % RH with a digital I2C interface. It works well for HVAC monitoring, weather stations, agricultural sensing, and appliance control. Buyers who need analog voltage output, higher temperature accuracy than ±0.5 °C, or humidity accuracy tighter than ±3 % RH at 25 °C should look at other sensing technologies.

Deciding Specification

The decisive figure is the I2C digital output combined with factory calibration. This interface allows multiple sensors on one bus and simplifies integration with microcontrollers and single-board computers. If your design requires a different communication protocol or uncalibrated raw sensor elements, this module will not match the requirement.

Highlights

  • High accuracy ±0.5 °C temperature and ±3 % RH humidity
  • Wide measurement range −40 to +80 °C and 0 to 100 % RH
  • Digital I²C output simplifies integration with microcontrollers
  • Factory calibrated for stable long-term performance
  • Upgraded ASIC and MEMS design improves robustness in harsh conditions

Specifications

TypeSensors

Questions about this item

How can I verify the sensor is working correctly after connecting it?

Power the module and read the I2C digital output; the temperature value should stay within ± 0.5 °C and the humidity value within ± 3 % RH at 25 °C.

What comes in the package and what extra parts are required?

The box contains the Grove DHT20 sensor module; a microcontroller or single-board computer with an I2C port and a Grove cable are needed separately.

Which version of this sensor should I choose for my project?

The V2.0 DHT20 model is the upgraded replacement for the DHT11, offering wider −40 to +80 °C and 0 to 100 % RH ranges with I2C digital output.

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