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DHT22 Humidity and Temperature Sensor Module (AM2302)
Accurately measure ambient temperature and relative humidity with the DHT22 (AM2302) sensor module - a high-precision, digital output sensor trusted by engineers, hobbyists, and IoT developers worldwide. Available now from The Engineer Store, Bengaluru, with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.
Specifications
| Sensor Model | DHT22 / AM2302 |
| Operating Voltage | 3.3V - 5.5V DC |
| Humidity Range | 0% - 100% RH |
| Humidity Accuracy | +/-2% RH |
| Temperature Range | -40 degreesC to +80 degreesC |
| Temperature Accuracy | +/-0.5 degreesC |
| Resolution | 0.1% RH / 0.1 degreesC |
| Output Signal | Digital single-bus (proprietary protocol) |
| Sampling Rate | Once every 2 seconds (0.5 Hz) |
| Sensor Type | Capacitive humidity sensor + NTC thermistor |
| Pin Configuration | VCC, Data, GND (3-pin breakout with onboard pull-up resistor) |
| Dimensions (Module) | Approx. 28mm x 12mm x 10mm |
| Mounting | Breadboard-compatible header pins |
| Compatibility | Arduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and more |
| Origin | Original / Authentic AM2302 sensor |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- High Precision: +/-0.5 degreesC temperature accuracy and +/-2% RH humidity accuracy - significantly better than the DHT11, making it ideal for applications where reliable readings matter.
- Wide Measurement Range: Reads temperatures from -40 degreesC to +80 degreesC and humidity from 0% to 100% RH, covering virtually any indoor or outdoor environment.
- Digital Output: Single-wire digital communication eliminates the need for analog-to-digital conversion and reduces wiring complexity.
- Module Format with Pull-Up Resistor: Comes pre-mounted on a breakout PCB with an onboard 4.7kOhm pull-up resistor, so you can connect directly to your microcontroller without additional components.
- Low Power Consumption: Draws minimal current during standby and measurement, making it well-suited for battery-powered and solar-powered projects.
- Broad Microcontroller Compatibility: Works seamlessly with Arduino (Uno, Mega, Nano), ESP8266 (NodeMCU), ESP32, Raspberry Pi, STM32, and virtually any platform with a digital GPIO pin.
- Extensive Library Support: Supported by popular libraries including Adafruit DHT, DHTlib, and ESPHome, with countless tutorials and example code available online.
- Long-Term Stability: Factory-calibrated with calibration coefficients stored in onboard OTP memory, ensuring consistent readings over extended use.
Why Choose the DHT22 Over the DHT11?
| Feature | DHT11 | DHT22 (AM2302) |
| Temperature Range | 0 degreesC to 50 degreesC | -40 degreesC to +80 degreesC |
| Temperature Accuracy | +/-2 degreesC | +/-0.5 degreesC |
| Humidity Range | 20% - 80% RH | 0% - 100% RH |
| Humidity Accuracy | +/-5% RH | +/-2% RH |
| Resolution | 1 degreesC / 1% RH | 0.1 degreesC / 0.1% RH |
If your project demands better accuracy, finer resolution, or a wider operating range, the DHT22 is the clear upgrade.
How It Works
The DHT22 module combines a capacitive polymer humidity sensor with an NTC (Negative Temperature Coefficient) thermistor inside a single housing. An integrated microcontroller reads both sensors, performs calibration compensation using factory-stored coefficients, and transmits the data as a 40-bit digital signal over a single data line. Your host microcontroller sends a start pulse, then the DHT22 responds with 16 bits of humidity data, 16 bits of temperature data, and an 8-bit checksum for error detection - all without requiring an ADC or complex wiring.
Typical Wiring (Arduino Example)
| DHT |
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy DHT22 Humidity and Temperature Sensor Module (AM2302) Online in India
Purchase the DHT22 Humidity and Temperature Sensor Module (AM2302) online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on DHT22 Humidity and Temperature Sensor Module (AM2302) with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy DHT22 Humidity and Temperature Sensor Module (AM2302) at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
```html
DHT22 Humidity and Temperature Sensor Module (AM2302)
Accurately measure ambient temperature and relative humidity with the DHT22 (AM2302) sensor module - a high-precision, digital output sensor trusted by engineers, hobbyists, and IoT developers worldwide. Available now from The Engineer Store, Bengaluru, with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.
Specifications
| Sensor Model | DHT22 / AM2302 |
| Operating Voltage | 3.3V - 5.5V DC |
| Humidity Range | 0% - 100% RH |
| Humidity Accuracy | +/-2% RH |
| Temperature Range | -40 degreesC to +80 degreesC |
| Temperature Accuracy | +/-0.5 degreesC |
| Resolution | 0.1% RH / 0.1 degreesC |
| Output Signal | Digital single-bus (proprietary protocol) |
| Sampling Rate | Once every 2 seconds (0.5 Hz) |
| Sensor Type | Capacitive humidity sensor + NTC thermistor |
| Pin Configuration | VCC, Data, GND (3-pin breakout with onboard pull-up resistor) |
| Dimensions (Module) | Approx. 28mm x 12mm x 10mm |
| Mounting | Breadboard-compatible header pins |
| Compatibility | Arduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and more |
| Origin | Original / Authentic AM2302 sensor |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- High Precision: +/-0.5 degreesC temperature accuracy and +/-2% RH humidity accuracy - significantly better than the DHT11, making it ideal for applications where reliable readings matter.
- Wide Measurement Range: Reads temperatures from -40 degreesC to +80 degreesC and humidity from 0% to 100% RH, covering virtually any indoor or outdoor environment.
- Digital Output: Single-wire digital communication eliminates the need for analog-to-digital conversion and reduces wiring complexity.
- Module Format with Pull-Up Resistor: Comes pre-mounted on a breakout PCB with an onboard 4.7kOhm pull-up resistor, so you can connect directly to your microcontroller without additional components.
- Low Power Consumption: Draws minimal current during standby and measurement, making it well-suited for battery-powered and solar-powered projects.
- Broad Microcontroller Compatibility: Works seamlessly with Arduino (Uno, Mega, Nano), ESP8266 (NodeMCU), ESP32, Raspberry Pi, STM32, and virtually any platform with a digital GPIO pin.
- Extensive Library Support: Supported by popular libraries including Adafruit DHT, DHTlib, and ESPHome, with countless tutorials and example code available online.
- Long-Term Stability: Factory-calibrated with calibration coefficients stored in onboard OTP memory, ensuring consistent readings over extended use.
Why Choose the DHT22 Over the DHT11?
| Feature | DHT11 | DHT22 (AM2302) |
| Temperature Range | 0 degreesC to 50 degreesC | -40 degreesC to +80 degreesC |
| Temperature Accuracy | +/-2 degreesC | +/-0.5 degreesC |
| Humidity Range | 20% - 80% RH | 0% - 100% RH |
| Humidity Accuracy | +/-5% RH | +/-2% RH |
| Resolution | 1 degreesC / 1% RH | 0.1 degreesC / 0.1% RH |
If your project demands better accuracy, finer resolution, or a wider operating range, the DHT22 is the clear upgrade.
How It Works
The DHT22 module combines a capacitive polymer humidity sensor with an NTC (Negative Temperature Coefficient) thermistor inside a single housing. An integrated microcontroller reads both sensors, performs calibration compensation using factory-stored coefficients, and transmits the data as a 40-bit digital signal over a single data line. Your host microcontroller sends a start pulse, then the DHT22 responds with 16 bits of humidity data, 16 bits of temperature data, and an 8-bit checksum for error detection - all without requiring an ADC or complex wiring.
Typical Wiring (Arduino Example)
| DHT |
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy DHT22 Humidity and Temperature Sensor Module (AM2302) Online in India
Purchase the DHT22 Humidity and Temperature Sensor Module (AM2302) online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on DHT22 Humidity and Temperature Sensor Module (AM2302) with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy DHT22 Humidity and Temperature Sensor Module (AM2302) at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.