IR infrared thermometer ST840 1)testing range: -25--840C, -13--1544F 2)D:S= ... 0.2C,0.4F 4)can select C/F Digital Infrared ThermometerModel: ST840Shenzhen Sanpo Instrument Co.,Ltd (A2) IR ... infrared thermoemterST840General featuresST840Temperature range-25 °C~840°C / -13°F~1, ...