NIST traceable Certificate of Calibration Available (COC Optional) IR-SoC technology (Infrared System on Chip) and Batch Calibration technology drive the dimensions and cost to the lowest limits New Low voltage technology, no more 9V battery Lowest cost D:S Ratio 11:1 Use the most affordable and available battery: AAA size, instead of the low capacity 9V battery Long Battery Life Note: with Laser and Backlit turned off For Alkaline Battery (1150mAh): Typical 8days. Large LCD Screen, with bright amber color Backlit Friendly User Interface: 5-Key ( with Emissivity Fool Proof Function ) with high-end arithmetic: Max;Min and DIF; AVG mode Auto Power Off in 1 minutes Precision K type Thermocouple Thermometer available (optional) Temperature range: -76 to 932F Laser