This part is a kind of semiconductor called MLX90614.

Function of this product has Single and Dual Zone Infra Red Thermometer.

Manufacturers : Melexis

Image and pinout :

Some of the text within the PDF file :

Single and Dual Zone Infra Red Thermometer in TO-39 Features and Benefits Small size, low cost Easy to integrate Factory calibrated in wide temperature range: -40 to 125 ˚C for sensor temperature and -70 to 380 ˚C for object temperature. High accuracy of 0.5° C over wide temperature range (0..+50° C for both Ta and To) High (medical) accuracy calibration optional Measurement resolution of 0.02° C Single and dual zone versions SMBus compatible digital interface Customizable PWM output for continuous reading Available in 3V and 5V versions Simple adaptation for 8 to 16V applications Power saving mode Different package options for applications and measurements versatility Automotive grade MLX90614 family Applications Examples High precision non-contact temperature measurements; Thermal [ ... ]

MLX90614 PDF Datasheet Download