DHT22/AM2302 Temperature and Humidity Sensor, Temperature & Humidity Sensor

DHT22/AM2302 Temperature and Humidity Sensor, Temperature & Humidity Sensor

Обзор

Provides superior ±0.5°C temperature accuracy for precise environmental control
Handles extreme -40°C to +80°C range across diverse global climates
Delivers 0.1°C / 0.1% RH high resolution for detecting subtle changes
Features simple single-wire digital interface using just one MCU pin
Ensures 100m stable signal transmission with strong EMI resistance.
Offers ultra-low <50μA standby power for battery-powered IoT devices.
Guarantees <±0.5% RH/year long-term stability over 5+ years.
Supports universal 3.3-5.5V operation across all major microcontrollers.
Complies fully with RoHS standards for global regulatory approval.

DHT22/AM2302 Digital Temperature and Humidity Sensor Module， Temperature Humidity Monitor Sensor ，Replace SHT11 SHT15 for Arduino Electronic Practice DIY

Product Description

DHT22/AM2302 Temperature and Humidity Sensor is a high-accuracy, digital sensing device designed for indoor and semi-outdoor environmental monitoring. Compared to entry-level sensors, it provides a wider measurement range, higher precision, and better long-term stability.

Integrating a calibrated humidity sensing element and a high-precision NTC temperature component, the sensor delivers reliable digital output via a single-wire interface. Its robust performance and compact design make it ideal for smart home systems, HVAC controllers, consumer electronics, and advanced IoT applications.

Built for consistent batch quality and long production life, the DHT22/AM2302 helps manufacturers reduce BOM costs while maintaining dependable environmental monitoring.

Advantages of DHT22/AM2302 Temperature and Humidity Sensor

High-precision digital sensor for accurate environmental monitoring
Wide measurement range: 0–100% RH and –40°C to +80°C
Typical humidity accuracy ±2% RH, temperature accuracy ±0.5°C
Single-wire digital interface requiring only one MCU I/O pin
Low power consumption suitable for battery-operated or wireless devices
Excellent long-term stability for indoor and semi-outdoor applications
Compact design for seamless integration into space-constrained products
Fast response time for real-time monitoring
Factory calibrated, ensuring consistent performance
RoHS compliant and ready for global distribution

DHT22/AM2302 Temperature and Humidity Sensor Specifications

Parameter	Specification
Sensor Type	Digital Temperature & Humidity Sensor
Humidity Range	0–100% RH
Humidity Accuracy	±2% RH (typical)
Temperature Range	–40°C to +80°C
Temperature Accuracy	±0.5°C (typical)
Resolution	0.1% RH / 0.1°C
Output Type	Single-wire digital interface
Response Time	≤2 seconds (typical)
Operating Voltage	3.3V – 6V DC
Current Consumption	≤2.5 mA (measuring)
Long-Term Stability	<0.5% RH/year (typical)
Calibration	Factory calibrated
Packaging Options	Bare sensor or module version
Compliance	RoHS compliant

Typical Applications of DHT22/AM2302 Temperature and Humidity Sensor

HVAC & Building Automation

Indoor climate control and energy-efficient ventilation
Smart thermostats and air quality monitoring
Advanced building management systems

Agriculture & Greenhouses

Precise irrigation and ventilation control
Soil moisture correlation with ambient humidity
Crop protection in controlled environments

Industrial Monitoring

Warehouse, storage, and data center environmental control
Pharmaceutical and food storage compliance
Precision monitoring in semi-outdoor industrial setups

Consumer & IoT Devices

Smart home hubs and weather stations
Desktop environmental monitors
Wearable prototypes and hobbyist electronics

Automotive & Transportation

Cabin climate monitoring in electric and hybrid vehicles
Cargo and perishable goods humidity tracking
RV, marine, and transport environmental systems

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