Technical Specifications: 1)Operating ambient: Surrounding Temperature: 10℃～ 40℃ Humidity: ≤85%. 2)Temperature range: Body Temperature 32℃ ～ 43℃ Surface Temperature -10℃ ～ 100℃ Room Temperature -10℃～ 60℃ 3)Accuracy : -10℃ ～ 32℃ ＝ ＋/－0.3℃ 32.1℃ ～ 43.0℃ ＝ ＋/－0.3℃ 43.1℃ ～ 100.0℃ ＝ ＋/－0.4℃ 4) Distance: 5cm～15cm 5) Operation time: 0.5 second 6) Automatic stop Time:20 seconds 7)Power: DC 3V (two AAA batteries) 8) Battery life: ≥5，000 times (two AAA batteries) 9) Dimention: 86*160*46mm 10) Weight: 169g (without batteries)