This device provides two methods of output: PWM and I2C. The 10 bits PWM output provides a resolution of 0.14°C, while the I2C interface has a resolution of 0.02°C.
The device is factory calibrated in wide temperature ranges: -40 to 85°C for the ambient temperature and -70 to 382.2°C for the object temperature. The measured value is the average temperature of all objects in the Field Of View of the sensor. The MLX90614 offers a standard accuracy of 0.5°C around room temperatures.