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New Smart Gadget with CMOSens Technology and SHT40 Sensor for Humidity, Temperature, and Dew Point Measurements

SHT4x Smart Gadget from Sensirion
SHT4x Smart Gadget from Sensirion

Sensirion has announced the new SHT4x Smart Gadget which is a reference design circuit board that demonstrates the outstanding performance and ease of use of Sensirion’s SHT4x humidity and temperature sensors in connected devices. The Gadget comes with a SHT40 humidity and temperature sensor and measures ambient humidity, temperature, and dew point in Celsius and Fahrenheit. Moreover, it is able to communicate with Bluetooth low energy devices, such as smartphones, while offering data-logging capabilities. The gadget consists of a main PCB equipped with a SHT40 sensor, LCD display, push-button, and BLE module, including battery, supports, and a user guide. The SHT40 is perfectly suited for mobile and battery-driven applications as it has an extended supply voltage range from 1.08 V to 3.6 V and 400 nA average current.


The SHT40 builds on a completely new and optimized CMOSens chip offering ultra-low power consumption and industry-leading accuracy specifications. The CMOSens Technology provides a complete sensor system on a single chip, with a fully calibrated digital I2C fast-mode plus interface. The sensor covers operating ranges from 0 to 100% RH and from -40°C to 125°C with accuracies of ±1.8% RH and ±0.2°C. The JEDEC JESD47 qualification demonstrated that the exceptionally small size encased within a robust DFN housing enables robust integration into challenging designs while meeting the highest reliability demands.


SHT4x Smart Gadget Features

  • SHT40 humidity and temperature sensor
  • LCD display for humidity, temperature and dew point in Celsius and Fahrenheit
  • Bluetooth Low Energy (BLE) connectivity to iOS and Android smartphones
  • iOS and Android apps available
  • Data logging capabilities
  • Additional design resources available


The new SHT4x Smart Gadget now available globally via Sensirion’s distribution network.

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