This is a breakout board for the incredibly small TMP102 digital temperature sensor.
The TMP102 is a digital sensor (I2C a.k.a. TWI), and has a resolution of 0.0625°C, and is accurate up to 0.5°C.
This is a very handy sensor that requires a very low-current.

Communication with the TMP102 is achieved through a two-wire serial interface.
There is no on-board voltage regulator, so supplied voltage should be between 1.4 to 3.6VDC.
Filtering capacitors and pull-up resistors are included as shown.

Features:

• 12-bit, 0.0625°C resolution
• Accuracy: 0.5°C (-25°C to +85°C)
• Low quiescent current
  • 10µA Active (max)
  • 1µA Shutdown (max)
• 1.4V to 3.6VDC supply range
• Two-wire serial interface
• 2x Mounting Holes

Documents:

• Schematic
• Eagle Files
• Datasheet (TMP102)
• Example Code (ATmega328)
• bildr Tutorial
• mbed Example
• GitHub