Infrared thermometer mini. Featuressingle dot laser targeting white back light ambient temperature (tamb) measurementc/f display selecting hold fuction low battery indication specificationmeasurement range :-20c 270c ; -4f 518ftamb measurement 0c 50c resulation : 1c field of view : 6:1typical distance to target :up to 1m emissivity : 0.95over range indication :"ol" or -ol" auto power off : 20s.