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DHT22

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The DHT22 Digital Temperature and Humidity Sensor Module AM2302 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin.

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General Description:

The DHT22 Digital Temperature and Humidity Sensor Module AM2302 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin.

Working Principle:

The DHT22 sensor measures temperature and humidity using a capacitive humidity sensor and a thermistor. The humidity sensor changes its capacitance based on moisture levels, while the thermistor’s resistance varies with temperature. These changes are converted into digital signals by an internal ADC, processed by a microcontroller, and communicated to an external microcontroller via a single-wire protocol. The sensor sends a 40-bit data packet with humidity, temperature, and a checksum for data integrity.

Specifications:

1. OperatingVoltage:3.5Vto5.5V.

2. Measuring current: 0.3mA.

3. Low power consumption.

4. Temperature range: -40 to 80 degree C.

5. Humidity range: 0% to 100%.

6. Accuracy: ±0.5°C and ±1%.

Requirements

 

S. No. Component Name Values
1 DHT22 1
2 Resistors 5.1k,1k
3 Capacitors 0.1uF
4 LED
5 Male Connector pin

 

Pin configuration:

 

S. No. Pins Pin Description
1 Vcc 5V
2 D0 digital pin
3 NC No connection
4 GND ground

Applications:

1. Weather stations.

2. HVAC systems.

3. Environmental monitoring.

4. Agriculture.

5. Home automation.

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Shipping policy

At our Company, we understand the importance of timely delivery. We offer a variety of shipping options to suit your needs, including standard, expedited, and express shipping. Our dedicated team works diligently to process and dispatch your orders promptly, aiming to deliver them to your doorstep within the estimated timeframe.

We strive to provide fast and reliable shipping to our customers. Here\\\’s everything you need to know about our shipping process:

  • Dispatch: Within 24 Hours
  • Free shipping across all products on a minimum purchase of $99.
  • International delivery time 5 to 7 business days
  • Cash on delivery might be available
  • Easy 30 days returns and exchanges

Please note that delivery times are estimates and may vary depending on factors such as product availability, destination, and carrier delay

Returns policy

We want you to be completely satisfied with your purchase from our website. If for any reason you are not entirely happy with your order, we\\\’re here to help. Certain exclusions and conditions may apply, so we encourage you to review our detailed return policy for more information. Rest assured, our goal is to ensure your complete satisfaction with every purchase you make from our website

  1. Returned items must be unused, undamaged, and in the same condition as received.
  2. Original tags, labels, and packaging must be intact and included with the returned item.
  3. Proof of purchase, such as your order confirmation or receipt, is required for all returns.

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