Integrated Silicon Solution INC(ISSI) is a technology leader that designs, develops, and markets high performance integrated circuits for  key markets:
automotive,communications,digital consumer,industrial and medical. ISSI products are high speed and low power SRAM and low and medium density DRAM. The Company also designs and markets NOR flash products and high performance analog and mixed signal integrated circuits.
GY-SHT31-D SHT31 Sensor Module
Humidity and Temperature Sensor Module
GY-SHT31-D SHT31 Humidity and Temperature Sensor Module

Humidity and Temperature Sensor Module
 Fully calibrated, linearized, and temperature compensated digital output
 Wide supply voltage range, from 2.4 V to 5.5 V
 I2C Interface with communication speeds up to 1 MHz and two user selectable addresses
 Typical accuracy of  2 %RH and  0.3 °C
 Very fast start-up and measurement time
 Tiny 8-Pin DFN package
Product Summary
SHT3x-DIS is the next generation of Sensirion’s temperature and humidity sensors. It builds on a new  CMOSens® sensor chip that is at the heart of
Sensirion’s new humidity and temperature platform. The SHT3x-DIS has increased intelligence, reliability and improved accuracy specifications compared to its
predecessor. Its functionality includes enhanced signal processing, two distinctive and user selectable I2C addresses and communication speeds of up to 1 MHz.
The DFN package has a footprint of 2.5 x 2.5 mm 2 while keeping a height of 0.9 mm. This allows for integration of the SHT3x-DIS into a great variety of applications. Additionally, the wide supply voltage range of 2.4 V to 5.5 V guarantees compatibility with diverse assembly situations. All in all, the SHT3x-DIS incorporates 15 years of knowledge of Sensirion, the leader  in  the  humidity  sensor  industry.
GY-SHT31-D SHT31 Humidity and Temperature Sensor Module Datasheet :


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