Temperature and Humidity Sensor DHT22
- Regular price
- RM 9.80
- Sale price
- RM 9.80
- Regular price
-
RM 10.00
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The DHT22 is an advanced temperature and humidity sensor that provides more precise measurements compared to the DHT11, with a wider temperature range and improved accuracy. It is ideal for weather stations, climate control, and environmental monitoring projects where accurate readings are essential. This sensor is perfect for use with microcontrollers like Arduino, ESP32, Raspberry Pi, and more.
Key Features
- Operating Voltage: 3.3V to 6V
- Temperature Range: -40°C to 80°C (±0.5°C accuracy)
- Humidity Range: 0% to 100% RH (±2-5% accuracy)
- Output Type: Digital (single-wire data communication)
- Response Time: 2s (for each measurement)
- Power Consumption: Low (~1.5mA)
- Interface: 3-pin (VCC, GND, Data)
- Built-in Resistor: 5kΩ pull-up resistor for stable data transmission
Technical Details
| Specification | Details |
|---|---|
| Operating Voltage | 3.3V to 6V |
| Temperature Range | -40°C to 80°C |
| Humidity Range | 0% to 100% RH |
| Temperature Accuracy | ±0.5°C |
| Humidity Accuracy | ±2-5% RH |
| Digital Output | Single-wire (data pin) |
| Response Time | 2s per measurement |
| Interface | 3-pin (VCC, GND, Data) |
| Power Consumption | ~1.5mA |
How It Works
- Temperature & Humidity Sensing: The DHT22 uses a capacitive humidity sensor and a thermistor to measure temperature and humidity.
- Signal Processing: The onboard microcontroller processes the signals and sends them through the single-wire digital interface.
- Data Transmission: The sensor communicates data through the data pin, which can be read by your microcontroller.
- High-Accuracy Readings: The DHT22 provides precise temperature and humidity measurements, suitable for environments that require accurate data.
Applications
- 🌤️ Weather Stations – Monitor and log environmental data for weather tracking.
- 🏠 Home Automation – Control HVAC systems, fans, or heaters based on environmental conditions.
- 🌱 Greenhouse Automation – Maintain optimal conditions for plant growth.
- 🧳 Data Logging – Collect accurate temperature and humidity data for research or experiments.
- 🏥 Health Monitoring Systems – Ensure indoor air quality and comfort.
Package Includes
✔ 1 x DHT22 High-Accuracy Temperature & Humidity Sensor Module
Why Choose the DHT22?
✅ High Accuracy: Superior ±0.5°C temperature and ±2-5% RH humidity accuracy.
✅ Wide Measurement Range: Detects a wide range of temperatures from -40°C to 80°C and humidity from 0% to 100% RH.
✅ Reliable Performance: Stable and consistent readings for critical monitoring applications.
✅ Easy to Use: Simple 3-pin interface for easy integration with microcontrollers like Arduino.