The DHT20 Digital Temperature & Humidity Sensor is a high-precision environmental sensor designed for accurate temperature and humidity measurement in embedded systems, IoT devices, weather stations, and automation projects. As the upgraded successor to the DHT11, the DHT20 features a dedicated ASIC chip, a high-performance capacitive humidity sensing element, and a built-in temperature sensor, delivering improved accuracy, faster response, and enhanced long-term stability. Using a standard I2C communication interface, it is easy to integrate with popular development platforms such as Arduino, ESP32, Raspberry Pi, STM32, and other microcontrollers.

Key Features

• Upgraded replacement for DHT11 temperature and humidity sensor.
• High-precision digital temperature and humidity measurement.
• Standard I2C communication interface.
• Factory calibrated for improved accuracy.
• Wide operating voltage from 2.2V to 5.5V DC.
• Built-in ASIC signal processing chip.
• Capacitive humidity sensing technology.
• Excellent long-term stability.
• Fast response time.
• Strong anti-interference capability.
• Wide humidity measurement range.
• Low power consumption.
• Compact 4-pin package.
• Compatible with Arduino, ESP32, Raspberry Pi, STM32 and other controllers.

Technical Specifications

Applications

• Weather Stations.
• Smart Home Automation.
• IoT Projects.
• Arduino Projects.
• ESP32 Projects.
• Raspberry Pi Projects.
• STM32 Development.
• Environmental Monitoring.
• Greenhouse Monitoring.
• Smart Agriculture.
• HVAC Systems.
• Air Quality Monitoring.
• Temperature Logging.
• Humidity Logging.
• Industrial Monitoring.
• Data Acquisition Systems.
• Home Weather Monitoring.
• Server Room Monitoring.
• Cold Storage Monitoring.
• Incubators.
• Smart Appliances.
• Educational Projects.
• Robotics.
• Embedded Systems.
• Laboratory Equipment.

Precautions

• Operate only within the specified 2.2V5.5V supply voltage.
• Do not expose the sensor to corrosive gases or liquids.
• Avoid condensation directly on the sensing element.
• Do not touch the sensor openings with bare hands.
• Ensure correct I2C wiring before powering the sensor.
• Use proper pull-up resistors if required by the application.
• Avoid mechanical shock and excessive vibration.
• Store in a clean and dry environment.
• Keep away from extreme heat sources.