GY-21 HTU21 Sensor Module
Review: 5 - "A masterpiece of literature" by John Doe, written onMay 4, 20020
SHT21 Digital Humidity And Temperature Sensor Module Replace SHT11 SHT15
SHT21 Digital Humidity And Temperature Sensor Module Replace SHT11 SHT15
SHT21 Digital Humidity And Temperature Sensor Module Replace SHT11 SHT15

GY-21 HTU21 Sensor Module

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  • Product SKU: KG592
₹ 184.80 ₹ 292.95
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The GY-21 Temperature and Humidity Sensor Module is an electronic device that integrates a humidity and temperature sensor into a single module. It allows you to measure both relative humidity (RH) and temperature in the surrounding environment.

Here's some information about this sensor module:

Humidity Measurement: The module includes a humidity sensor that can measure the relative humidity of the environment. It provides data on how much moisture is in the air.

Temperature Measurement: In addition to humidity, the module also incorporates a temperature sensor that measures the ambient temperature. It provides data on how warm or cold the surroundings are.

Digital Output: The module communicates with microcontrollers or other digital devices using a digital interface like I2C (Inter-Integrated Circuit) or SMBus. This digital communication simplifies integration into electronic projects.

High Accuracy: Depending on the specific sensor used in the module, it may offer high accuracy in both humidity and temperature measurements.

Low Power Consumption: These modules typically consume low power, making them suitable for battery-powered applications or scenarios where energy efficiency is crucial.

Calibration: Some versions of this sensor module come pre-calibrated, reducing the need for additional calibration steps in your projects.

Common Uses:

Weather Stations: The GY-21 Temperature and Humidity Sensor Module can be used in weather stations and environmental monitoring systems to measure and report humidity and temperature data.

Indoor Climate Control: HVAC (Heating, Ventilation, and Air Conditioning) systems and indoor climate control applications use such sensors to monitor and regulate indoor humidity and temperature levels for occupant comfort and energy efficiency.

IoT Projects: Makers and IoT enthusiasts often incorporate these modules into their projects for environmental monitoring, home automation, and data logging.

Greenhouses: They are useful in greenhouse automation systems to maintain optimal humidity and temperature levels for plant growth.

Data Logging: These modules are suitable for use in data loggers, allowing for the continuous recording of environmental conditions over time.

Consumer Electronics: Digital hygrometers, indoor thermometers, and other consumer electronic devices may use these modules to provide users with humidity and temperature information.

Technical Details

  • Interface: I2C
  • Operating Voltage (VDC): 2.1 ~ 3.6
  • Current Consumption: 0.15uA
  • Resolution : 0.04%RH, 0.02°C
  • Accuracy : ±2%RH, ±3°C

Physical Attributes

  • L x W x H (mm): 21 x 16 x 1.02
  • Weight (gm): 5

Integration with Arduino

Sample Code

Product Video


Package Includes

  • 1 x GY-21 HTU21 Sensor Module

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