Digital Humidity Sensor SHT4x (RH/T)
In line with Sensirion’s industry-proven humidity and temperature sensors, the SHT40 offers the best price-performance ratio on the market. Tape and reel packaging combined with its suitability for standard SMD assembly processes make the SHT4x ideal for high-volume applications.
The SHT40 builds on a completely new and optimized CMOSens® chip that offers reduced power consumption and improved accuracy specifications. With the extended supply voltage range from 1.08 V to 3.6 V, it’s the perfect fit for mobile and battery-driven applications. The exceptionally small size in a robust DFN housing enables integration into challenging designs while meeting the highest reliability demands, as demonstrated by the JEDEC JESD47 qualification.
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Integrate Flex PCB into Prototyping
Sensirion’s evaluation kits for SHT and SGP sensors come with sensors on a Flex-PCB, that can be combined with our SensorBridge hardware and ControlCenter evaluation software for component level evaluation, without the need for any programming.
When the goal is to move to a prototyping stage, a number of third party companies like Adafruit, Sparkfun, Mikroelektronika, Pimoroni or Seeedstudio offer convenient breakout boards to connect our parts to development kits quickly and safely. Learn more

Evaluation Kit Quick Start
Start evaluating your SHT40 humidity and temperature sensor in three simple steps:
1) Download the SEK-ControlCenter viewer software (available for Windows, Linux and MacOS)
2) Connect the SEK-SHT40-Sensor to a SEK-SensorBridge
3) Connect the SEK-SensorBridge to your PC and start measuring
For more information, please visit: www.sensirion.com/sek
Software, Drivers and Tutorials
Breakout Boards

Adafruit's SHT40 breakout board features a STEMMA/QT connector to connect directly to compatible boards

MikroElektronika's Temp & Hum 15 uses the Click footprint, and can be plugged into compatible development boards in a matter of seconds

This board uses MikroElektronika's Click layout which allows solderless prototyping when using compatible platforms, and features an SHT40 in addition to the SGP40
Resources
Important Documents SHT40 Humidity and Temperature Sensor