Fermion - SHT40 I2C temperature and humidity sensor - DFRobot SEN0428

A module from the Fermion series by DFRobot featuring the Sensirion SHT40 temperature and humidity sensor. The SHT40 sensor measures humidity from 0% to 100% RH with an accuracy of ±1.8% RH and temperature from -40°C to 125°C with an accuracy of ±0.2°C. A built-in variable-power heater enables proper operation in extreme conditions, such as condensing environments. The module uses an I2C interface for communication, is powered from 3.3 V to 5 V and consumes up to 0.15 mA in low power mode. The module is ideal for battery-powered mobile and wireless applications. It can be used for urban environmental monitoring, smart buildings, industrial automation and other Internet of Things applications.

• High accuracy
• Low power consumption
• Small size
• Fast response time

• Intelligent buildings
• Weather stations
• Warehouses
• Animal and plant environments
• Incubator for animals
• Plant seed germination containers

The SHT40 temperature and humidity sensor module uses the I2C bus for communication. It is powered from 3.3 V to 5 V. Its pinouts are:

• VCC: supply voltage from 3.3 V to 5 V
• GND: system ground
• SCL: I2C bus clock line
• SDA: I2C bus data line

• Supply voltage: 3.3 V to 5 V
• Current consumption: 0.45 mA
• Communication interface: I2C
• Response time: 8 s
• Humidity measurement range: 0% to 100% RH
• Accuracy of humidity measurement: ±1.8% RH
• Temperature measurement range: -40°C to 125°C
• Accuracy of temperature measurement: ±0,2°C
• Mounting holes: M2 (2 mm)
• Mounting hole spacing: 10 mm
• Dimensions: 17 x 14 mm

• Manufacturer's website: DFRobot SEN0428
• User guide
• SHT40 Documentation
• Diagram