Benetech GM531 Infrared thermometer

Features 1.℃ / ℉ temperature unit conversion 2.Data retention 3.Positioning laser 4.LCD backlight 5.Max / Min display 6.Self-calibration 7.Ambient temperature view 8.Automatic shut-down Specifications Temperature range      GM531: -50~530℃ (-58~986℉)      Accuracy      0~400℃/530 (32~752℉/986 ) :     ±1.5℃(±2.7℉) or ±1.5%-50~0℃(-58~32℉):±3℃ (±5℉)     Whichever is greater Repeatability      1% of reading or 1℃      Response time      500 mSec, 95% response      Spectral response      5~14 um      Emissivity      0.10~1.00optional (0.95 Preset)      Distance to Spot size      12:1      Operating Temperature      0 ~40℃ (32 ~ 104℉)      Operating Humidity      10~95%RH non-condensing，     up to 30℃(86℉) Storage Temperature      -20 ~ 60℃ (-4~140℉)      Power      3V (1.5V AAA  * 2)      Typical battery life (Alkaline)       Laser Models:12 hrs      Packing List 1.5V battery*2 Host*1 Blister packaging*1 Instructions*1