The most basic design consists of a lens to focus the infrared (IR) energy on to a detector， which converts the energy to an electrical signal that can be displayed in units of temperature after being compensated for ambient temperature variation. This configuration facilitates temperature measurement from a distance without contact with the object to be measured. This Infrared IR Thermometer is LCD display， that is the true temperature.                                    Features            Non-contact accurate temperature measuringBuilt-in laser aiming℃/°F optionalLow battery indicationLCD readout， backlightAuto-data hold and auto-power offButton design， easy to useBy measuring infrared radiation the thermometer can tell you the temperature of any surface with the touch of a buttonLightweight and portable， it’s useful for lots of do-it-yourself projectsSuitable for predictive and preventative industrial maintenance， such as check transformer， connectors， switch devices， rotating equipment， stove and so on                                                            Specifications            Distinguishing Rate    0.1°!#!lt!*!100° Otherwise: 0.5°    <br>Temperature Range    -50℃-+300℃    <br>Accuracy    +-1℃    <br>Battery    1..5V    <br>Dimensions    6.1" x 1.87" x 0.79" / (15.5 x 4.76 x 2)cm (L x W x D)    <br>Color    Blue    <br>Weight    3.39oz / 96g    <br>Product Size    125mm    <br>Ambient Temperature    -10℃-+40℃    <br>                                                            Package Includes            1 x LCD Digital Thermometer for WT-1 Blue