DFRobot
Gravity: SHT31-F Digital Temperature and Humidity Sensor
Gravity: SHT31-F digital temperature and humidity sensor is based upon the Sensirion SHT31-F sensor IC. Thanks to Sensirion’s CMOSens® technology, highly int...
Gravity: SHT31-F digital temperature and humidity sensor is based upon the Sensirion SHT31-F sensor IC. Thanks to Sensirion’s CMOSens® technology, highly integrated capacitive humidity sensing components and band-gap temperature sensing components, the SHT31-F offers high reliability and long-term stability with low power consumption, fast response and strong anti-interference ability. The sensor supports I2C communication, and is compatible with 3.3V/5V controllers like Arduino, micro:bit, ESP32. It is easy to achieve precise and high-reliability temperature and humidity sensing for urban environment monitoring, intelligent buildings, industrial automation, smart home and other Internet of Things applications.
SHT31-F is the standard version of the SHT3x series. It provides humidity accuracy ±2% RH @ 0%RH~100%RH (at 25°C), and temperature accuracy±0.2°C @ 0℃-90℃ (typical).
The SHT31-F chip features a PTFE membrane dedicated to protecting the sensor opening from liquids and dust according to IP67. It thus allows the sensor to work under harsh environmental conditions, where spray water and high exposure to dust might be challenging for accurate sensor performance. Due to minimal package volume and the membrane’s high water vapor permeability, the response time of the relative humidity and temperature signal is identical to the value achieved by the uncovered sensor. Although the membrane option provides perfect protection against water and dust ingress, it does not in general prevent contamination from volatile chemicals.
FEATURES
- High precise, internal auto-calibrated, digital output
- Low power consumption, fast response, and strong anti-interference
- IP67 dust-proof protective film
- Compatible with 3.3V/5V controllers
APPLICATIONS
- Urban Environmental Monitoring
- Intelligent Building, Smart Home
- Grain Storage
- Plant and animal breeding system
SPECIFICATION
- Operating Voltage: 3.3~5.5V
- Operating Current: <1.5mA
- Humidity Detection Range: 0%RH~100%RH
- Humidity Accuracy: ±2%RH@10%RH~90%RH（at 25℃）
- Temperature Detection Range: -40℃~125℃
- Temperature Accuracy: ±0.2℃@0℃~90℃ (Typical)
- Communication: I2C
- Outline Dimension: 32x22mm/1.26x0.87”
- Mounting Hole Size: 3mm/0.12”
- Mounting Hole Pitch: 15mm/0.59”
DOCUMENTS
Jargon buster
Plain-language definitions for the technical terms used above.
- CMOSens
- CMOSens is Sensirion’s integrated sensor technology that combines sensing elements and electronics in one package. It matters because it affects how the sensor measures temperature and humidity and how it is supported by the manufacturer’s libraries and datasheets.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IP67
- An ingress protection rating meaning the enclosure is dust-tight and can survive temporary immersion in water under specified test conditions. This matters when choosing a sensor for outdoor, wet, or wash-down environments.
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