DHT11 Digital Temperature/Humidity Sensor Module

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A digital sensor that measures temperature and humidity is called a DHT11 sensor module. It is a well-liked sensor module that's frequently utilized in different electrical projects.

This module is great for connecting with Arduino microcontrollers to read temperature and humidity. You no longer need to connect a 10k or 4.7k resistor to interface the device as it is already provided with the module. Simply Connect VCC, GND and Data to run.

Specifications:

• Operating Voltage: 3.3V to 5.5V
• Max Current: 2.5mA
• Humidity Measuring Range: 20-90% (5% Accuracy)
• Temperature readings: 0 to 50°C  (±2°C accuracy)
• Resolution: 16-bit resolution
• Sampling Rate (Sec): 1Hz - every 1 second
• Response Time: <5 seconds
• Dimensions: 15.5 x 12 x 5.5 mm (L x W x H)
• Pinout with 0.1” VCC, Data, NC, Ground
• Power Consumption: Low

Frequently Asked Questions About DHT11 Digital Temperature/Humidity Sensor Module

Q1: How does the DHT11 sensor module work?

The thermistor and capacitive humidity sensor used by the DHT11 sensor module monitor temperature and humidity, respectively. The microcontroller in the sensor module transforms the analog signals from the sensors into digital signals so that they may be read by a computer or another microcontroller.

Q2: What is the operating voltage of the DHT11 sensor module?

The DHT11 sensor module operates between 3.3V and 5V DC.

Q3: What is the measuring range of the DHT11 sensor module?

The DHT11 sensor module has a measurement range of 0°C to 50°C for temperature and 20% to 90% for humidity.

Q4: What is the accuracy of the DHT11 sensor module?

The DHT11 sensor module has an accuracy of 2°C for temperature and 5% for humidity.

Q5: What is the response time of the DHT11 sensor module?

The DHT11 sensor module responds in around 2 seconds.

Q6: How do I interface the DHT11 sensor module with a microcontroller?

The four pins of the DHT11 sensor module are VCC, GND, DATA, and NC. The VCC and GND pins must be connected, respectively, to the power supply and ground. The microcontroller's digital input/output pin is linked to the DATA pin. To read the data from the sensor module, utilize a library.

Q7: Is the DHT11 sensor module suitable for usage outside?

Since it is not waterproof, the DHT11 sensor module is not intended for outdoor usage. Only indoor situations should utilize it.

Q8: What is the DHT11 sensor module calibration procedure?

There is no need for calibration with the DHT11 sensor module. However, you may use a calibration formula to change the temperature and humidity measurements to increase the device's accuracy.

Q9: Can I use a Raspberry Pi and the DHT11 sensor module?

The DHT11 sensor module is compatible with the Raspberry Pi. To read data from the sensor module using a Python library, you must connect the sensor module to the Raspberry Pi's GPIO pins.

TECHNICAL DETAILS

• Datasheet