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DHT22 AM2302 Digital Temperature & Humidity Sensor Module for Arduino
DHT22 AM2302 Digital Temperature & Humidity Sensor Module for Arduino
Regular price
HK$35.00
Regular price
Sale price
HK$35.00
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The DHT22 / AM2302 Digital Temperature & Humidity Sensor Module is a high-accuracy environmental sensing solution designed for Arduino, Raspberry Pi, ESP32, smart home systems, and DIY electronics. Compared to the DHT11, it provides significantly better precision and a wider measurement range, making it ideal for weather monitoring, indoor climate control, and automation projects.
✨ Key Features
- High Accuracy: ±2% RH humidity accuracy and ±0.5°C temperature accuracy.
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Wide Measurement Range:
- Temperature: −40°C to +80°C
- Humidity: 0% to 99.9% RH
- Simple Interface: Single-bus output, easy to connect to microcontrollers.
- Upgrade Friendly: Fully compatible with DHT11 wiring and libraries.
- Flexible Power Input: Operates on 3V–5.5V DC, suitable for most development boards.
📊 Specifications
| Item | Details |
|---|---|
| Model | DHT22 / AM2302 Module |
| Sensor Type | Digital Temperature & Humidity Sensor |
| Working Voltage | DC 3V – 5.5V |
| Humidity Range | 0% – 99.9% RH |
| Humidity Accuracy | ±2% RH |
| Temperature Range | −40°C – +80°C |
| Temperature Accuracy | ±0.5°C |
| Resolution | 16-bit |
| Sampling Period | 2 seconds |
| Output | Single-Bus Digital Output |
🔌 Wiring Guide
| Pin | Function | Description |
|---|---|---|
| VCC | Power Input | 3.3V or 5V |
| GND | Ground | Negative terminal |
| DATA / OUT | Data Signal | Connect to microcontroller GPIO |
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