Adafruit MCP9808 High Accuracy I2C Temperature Sensor Breakout Board [ADA1782] MCP9808 High Accuracy I2C Temperature Sensor Breakout Board i2c digital interface (Uses any I2C address from 0x18 thru 0x1F) Sensing Temperature: -40C ~ 125C Accuracy: 0.25C typical Voltage - Supply: 2.7V ~ 5.5V 21mm x 13mm x 2mm / 0.8" x 0.5" x 0.08" Weight: 0.9g