DHT22 temperature and humidity sensor
$1.001pcs
The DHT22 (AM2302) temperature and humidity sensor provides you with industrial-grade high-precision measurements
| Dimensions | 25 × 15 × 7.7 mm |
|---|---|
| Brand |
easyelecmodule |
3583 in stock
Product Description
The DHT22 (AM2302) Temperature and Humidity Sensor is a high-performance digital device that provides calibrated outputs for both temperature and humidity. It integrates a capacitive humidity sensor, a precise NTC temperature element, and an internal 8-bit microcontroller to ensure high accuracy, fast response, and excellent long-term stability. Thanks to its strong anti-interference capability and simple single-wire interface, it is easy to integrate into various systems. With compact size, low power consumption, and a transmission distance exceeding 20 meters, the DHT22 is widely used in environmental monitoring, industrial control, and smart home applications.
Materials
Component | Material & Specifications |
|---|---|
| Sensor Module | ABS material Excellent impact/heat/low-temp/chemical resistance, strong electrical performance, stable dimensions, high surface gloss |
Metal pins | Metal Four-pin single row pin configuration |
Product Features
| Feature | Specification & Technical Details |
|---|---|
| Ultra-high accuracy |
±0.5°C (temp) | ±2% RH (humidity) • Temperature accuracy: ≤0.5°C in 0-60°C range • Humidity accuracy: ±2% at 25°C (max ±5% over full 0-100% RH range) |
| Ultra-low power consumption |
1.5mA (active) | 50μA (standby) • Active current during measurement: 1.5mA (3-5V DC) • Sleep current: 40-50μA (80% lower than DHT11) • Enables multi-year battery operation |
| Ultra-fast response speed |
2s sampling rate | 4s step response • New readings every 2 seconds (refresh rate) • 63% humidity step response in 4 seconds • Temperature response time: 10s (airflow 1m/s) |
| Long transmission distance |
20+ meters • Reliable data transmission at >20m cable length • Robust single-wire digital protocol • Maintains signal integrity with 4.7kΩ pull-up resistor |
| Fully automatic calibration |
Factory laser-trimmed • Precision calibrated during manufacturing • Calibration coefficients stored in OTP memory • No user calibration required throughout lifespan |
| Ultra-high stability |
±0.1°C/yr | ±0.5% RH/yr • Long-term temperature drift: <0.1°C/year • Humidity drift: <0.5% RH/year • Stable performance in -40°C to 80°C range |
Product Parameters
| Parameter | Value |
|---|---|
| Model | DHT11 (AM2302) |
| Supply Voltage | DC:3.3~5.5V |
| Max Operating Current | 2.5mA |
| Temperature Range | -40~+80°C |
| Humidity Range | 0~99.9%RH |
| Accuracy | Temperature: ±0.5°C Humidity: 0.1%RH |
| Sampling Rate | 0.5HZ (Read every two seconds) |
| Resolution | Humidity: 0.1°C Temperature: 0.1%RH |
| Drift Value | Temperature: <0.1°C/year Humidity: <0.5%RH/year |
| Sensor | Capacitive humidity sensor |
| Output Signal | 1-Wire digital signal |
| Housing Material | PC plastic |
Application Areas
Testing and inspection equipment, consumer electronics, automobiles, data loggers, home appliances, humidity regulators, medical, meteorological stations, and various other fields related to temperature and humidity detection.
Pin Description
| Pin | Description |
|---|---|
| Vcc | Connect to 3.3V |
| DATA | Used for communication between sensor and microcontroller (connect to Arduino digital signal interface) |
| NC | Not connected |
| GND | Connect to the ground of Arduino development board |
Related content
Real shot effect picture display
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .
Reviews
There are no reviews yet.