1This is a portable handheld thermometer with -30~550C/-22F~1022F measuring range. 2Non-contact infrared measuring, accurate and convenient. 3/ temperature unit conversion, settable high/low temperature alarm. 4With color LCD backlight display and data hold function, convenient to read data in dark. 5Low power consumption, auto power off, battery power indication. Features:1.Thisisaportable handheldthermometer with -30~550C/-22F~1022Fmeasuringrange. 2.Non-contactinfraredmeasuring, accurate and convenient. 3./ temperature unit conversion, settable high/low temperature alarm. 4.WithcolorLCDbacklightdisplayanddataholdfunction, convenient to read data in dark. 5.Lowpowerconsumption, autopoweroff, battery powerindication. 6.Applicableforvarioushot, hazardousorhard-to-reach objects without direct contact. Specification: Model:HT650B Color:Black & Red MeasurementRange(C): -30~550C/-22F~1022F Accuracy: 3C/(1.5%+2C) Laser: <1mW/630-670nmLevel2 DistanceSpotRatio:12:1 Response Time: <0.5s SpectralResponse: 8-14um Emissivity: 0.95 BatteryType: 2x1.5VAAA battery(notincluded) Autopower-off: yes Datahold: yes Maxvaluedisplay: yes Batteryindication: yes Lasersigndisplay: yes Laseron/offselection: yes LCDbacklightselection: yes High/lowtemperaturealarm(adjustable): yes Datastorage: yes Workingenvironment: 0-40 Storagetemperature: -10-60 Itemsize: 142*92*42mm/ 6.77*3.62*1.65in Package weight: Approx. 200g/7.0oz Package list: 1 * InfraredThermometer 1*UserManual Note:1.Donotpointlaserdirectlyorindirectlyateyes. 2.Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. 3.Please allow slight error due to manual measurement. Thanks for your understanding. Please note that this product is for industrial use and cannot be used to measure human body temperature.4.