DHT22 Digital Temperature and Humidity Sensor Module

@ TECH HALLROAD

The DHT22 module can measure temperature and humidity in a wide range. The temperature range is from -40°C to 80°C with an accuracy of ±1°C. The humidity range is from 0% to 100% with an accuracy of ±2%. The sensor also has a minimum sampling time of 2 seconds, which means that the sensor cannot be polled more often than every 2 seconds.

 850.00

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The DHT22 module is a digital temperature and humidity sensor that is commonly used in electronic projects. It is a low-cost, easy-to-use sensor that can be interfaced with a wide variety of microcontrollers. The DHT22 module has a 3-pin interface that consists of a power pin, a ground pin, and a data pin. The data pin is used to transmit the sensor’s readings in a digital format.

The DHT22 module can measure temperature and humidity in a wide range. The temperature range is from -40°C to 80°C with an accuracy of ±1°C. The humidity range is from 0% to 100% with an accuracy of ±2%. The sensor also has a minimum sampling time of 2 seconds, which means that the sensor cannot be polled more often than every 2 seconds.

The DHT22 module can operate on a voltage range of 3.3V to 5V. The typical operating voltage is 4.5V. The sensor has a low power consumption of 2.5mA.
The DHT22 module works by using two sensors to measure temperature and humidity. The temperature sensor is a negative temperature coefficient (NTC) thermistor, which means that its resistance decreases as the temperature increases. The humidity sensor is a capacitive sensor, which means that its capacitance increases as the humidity increases.

The DHT22 module works in two phases:

Measurement phase: In this phase, the sensor measures the temperature and humidity. The temperature sensor is activated first, followed by the humidity sensor.

Transmission phase: In this phase, the sensor transmits the measured values to the microcontroller. The sensor sends a 40-bit data packet that includes the temperature and humidity readings, as well as a parity bit for error checking.

The DHT22 module is a very accurate and reliable sensor. It has an accuracy of ±1°C for temperature and ±2% for humidity. 

Features : –

DHT22 uses a capacitive humidity sensor and a thermistor to measure the all round, nearby air and puts out (from mouth) out a by numbers, electronic signal on the facts pin (no analog input pins needed). High-cost performance and high precision make it ideal for temperature and humidity monitoring of Arduino and Raspberry Pi, you can also use it to make a thermometer and hygrometer. The sensor also has a fast response time of 2 seconds.

Here are some of the key features of the DHT22 module:

  • Digital signal output
  • Wide temperature and humidity range
  • High accuracy
  • Low power consumption
  • Easy to interface with microcontrollers

DHT22 Digital Temperature and Humidity Sensor Module Specifications : –

The DHT22 module is a very popular sensor for a variety of applications, including home automation, weather monitoring, environmental monitoring, industrial control, and medical devices. It is a low-cost, accurate, and reliable sensor that is easy to interface with microcontrollers. Here are the specifications of the DHT22 Digital Temperature and Humidity Sensor Module:

  • Operating voltage: 3.3V to 5.5V
  • Operating current: 2.5mA
  • Input signal: Digital signal via 1-wire bus
  • Sensing element: Polymer capacitor
  • Operating range: Humidity: 0-100%RH; Temperature: -40~80Celsius
  • Accuracy: Humidity: +-2%RH(Max +-5%RH); Temperature <+-0.5Celsius
  • Response time: 2 seconds
  • Dimensions: 15.3mm (0.6″) length x 7.8mm (0.3″) width x 25.3mm (1.0″) height
  • Weight: 2.4g (0.08oz)

DHT22 Digital Temperature and Humidity Sensor Module Pin Descriptions : –

The VCC pin is the power pin and should connect to a 3.3V or 5V power supply. The Data pin is the data pin and used to transmit the sensor’s readings to the microcontroller. The GND pin is the ground pin and should connect to the ground of the circuit. Here is the pin description of the DHT22 Digital Temperature and Humidity Sensor Module:

  • Pin1: VCC (Power)
  • Pin2: Data
  • Pin3: GND (Ground)
DHT22 Digital Temperature and Humidity Sensor Module Applications : –

The DHT22 module is a very popular sensor for a variety of applications, including home automation, weather monitoring, environmental monitoring, industrial control, and medical devices. It is a low-cost, accurate, and reliable sensor that is easy to interface with microcontrollers. Here are some of the applications of the DHT22 module:

  • Home automation
  • Weather monitoring
  • Environmental monitoring
  • Industrial control
  • Medical devices
Package : –

1 x DHT22 Digital Temperature and Humidity Sensor Module

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DHT22 Digital Temperature and Humidity Sensor Module
DHT22 Digital Temperature and Humidity Sensor Module

 850.00

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