Sensirion, Staefa, Switzerland, offers the SHT40 Smart Gadget, a reference design circuit board that comes with a humidity and temperature sensor and measures ambient humidity, temperature, and dew point in Celsius and Fahrenheit. It communicates with Bluetooth low-energy devices such as smartphones while offering data-logging capabilities. The board consists of a main PCB equipped with the sensor, LCD display, push button, and BLE module including battery, supports, and a user guide. Using CMOSens® technology, it 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 to 125 °C. The unit is encased within a DFN housing for integration into designs. The MyAmbience app lets users view live data from all gadgets or track history and export data.

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This article first appeared in the September, 2021 issue of Tech Briefs Magazine.

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