Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board

Key Features: Accurate and intelligent alternative to the much simpler Humidity and Temperature Sensor - SHT15 Breakout I2C digital humidity sensor Breakout board that includes the Filtered version (to keep the sensor clean), a 3.3V regulator and I2C level shifting circuitry Fully assembled and tested - some basic soldering required 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 52% when it feels more like 77%. Enter the HTU21D-F Temperature + Humidity Sensor - the best way to prove the weatherman wrong! This I2C digital humidity sensor is an accurate and intelligent alternative to the much simpler Humidity and Temperature Sensor - SHT15 Breakout. It has a typical accuracy of ± 2% with an operating range that' s optimized from 5% to 95% RH. Operation outside this range is still possible - just the accuracy might drop a bit. The temperature output has an accuracy of ± 1degC from -30~90degC. Such a lovely chip - so Adafruit came up with a breakout board that includes the Filtered version (the white bit of plastic which is a PTFE filter to keep the sensor clean), a 3.3V regulator and I2C level shifting circuitry.

This lets you use it safely with any kind of microcontroller with 3.3V -5V power or logic. Each order comes with one fully assembled and tested PCB breakout and a small piece of header. You' ll need to solder the header onto the PCB but it' s fairly easy and takes only a few minutes even for a beginner.
Item Specifics Size: 18mm x 16mm x 2mm / 0.7" x 0.6" x 0.08"
Weight: 1g
I2C 7-bit address: 0x40