13:1 compact infrared thermometer gun features:1:Distance to spot size ratio is 13 to 1 at the focal point.2:Unique flat surface,mini modern housing design.3:Class II laser to identify the centre point of the area being measured.4:Max/min memory.5:Impact-resistant ABS case.6:Auto data hold when trigger released.7:Auto power off.8:Backlighting illuminates display for taking measurement at night or in areas with low background light levels.9:Fixed emissivity at 0.95.13:1 compact infrared thermometer gun specifications:Model:IR-801Range:-50～350℃;-58～662℉Accuracy:-50℃～0℃: ±4℃  0℃～350℃:±2% or reading ±2℃Emissivityfixed at 0.95Optical ResolutionD:S=13:1Resolution0.1℃(0.1℉)Spectral Response8～14umPolarity DisplayAuto display, "-" indicates negative, while positive with no sign.Diode LaserOutput＜1mW,630～670nm,class 2(Ⅱ)Auto Power OffAuto shuts off after 20 seconds inactivityOperating Temp.0℃ to 50℃ / 32℉ to 122℉Storage Temp.-20℃ to 60℃ / -4℉ to 140℉Relative HumidityOperating:10～95%RH,Storage:<80%RHPower Supply9V batteryDimensions(L*W*H)155.5*98.8*27.5mmWeight176g13:1 compact infrared thermometer gun pictures: