Allytech Non-contact IR Infrared Digital Thermometer Temperature Gun, Sensor LED Backlight Laser Pointer Measurement GM300(-50550oC)(-581022&deg;F) Yellow/Black "Measures in Celsius or Fahrenheit (Range: -581022 / -50 to +550) Built-in laser for precisely aiming; one 9-volt battery ( not included) Distance Spot Ratio: 12:1; Emissivity: 0.95(fixed); Response Time: &lt;500ms Laser on/off switch, Auto power off & temperature data hold FDA, FCC, CE, ROHS approved