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Adafruit Si7021 Temperature & Humidity Sensor Breakout Board

€9.58 *

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  • Adafruit
  • EXP-R15-1131
  • 3251
  • 2
  • US
  • 85423910
  • 0.001
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It's summer and you're sweating and your hair's all frizzy and all you really want to know is... more

It's summer and you're sweating and your hair's all frizzy and all you really want to know is why the weatherman said this morning that today's relative humidity would max out at a perfectly reasonable 42% when it feels more like 77%. Enter the Si7021 Temperature + Humidity Sensor - the best way to prove the weatherman wrong!

This lovely sensor for Silicon labs has ± 3% relative humidity measurements with a range of 0–80% RH, and ±0.4 °C temperature accuracy at a range of -10 to +85 °C. Great for all of your environmental sensing projects. It uses I2C for data transfer so it works with a wide range of microcontrollers.

We put this nice sensor on a breakout board with a 3.3V regulator and level shifting so you can use it safely with 3.3V or 5V power & logic. There's a PTFE filter to keep the sensor clean, that's the white flat thing on top. Also comes with some pin header. Some light soldering is required to attach the header but it's easy to do.

Check out our easy-to-use Arduino library on GitHub. Wire Vin to 3-5VDC, GND to ground, and SDA and SCL to your microcontroller's I2C pins.

Technical Details:

  • Product Dimensions: 17.8mm x 15.3mm x 3.0mm
  • Product Weight: 1.0g
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