Metravi 500 Deg C Infrared Temperature Calibrator is an electrical metric device ideal for measuring temperatures quickly without touching the object. The 500 Deg C Infrared Temperature Calibrator measures the electromagnetic radiation emitted by an object due to its temperature. The Infrared Temperature Calibrator is ideal for measuring hot temperatures from a distance. The Temperature Calibrator only measures surface temperatures and should only be used as a quick guide for measurement. The infrared temperature calibrator uses the total brightness of a selected band of these waves to determine the temperature. Product Attributes: Brand: Metravi Model: BB 550 Power: 220 V AC, 1.25 A/110 V AC, 2.5 A Resolution: 0.1 Deg C Target Emissivity: 0.95 Temperature Range: 50 to 500 Deg C Accuracy: ±0.5°C at 100°C / ±0.8°C at 500°C Target Emissivity : 0.95 Stability: ±0.1°C at 100°C Aperture Diameter: 58mm Power : 220VAC(±10%), 1.25A / 110VAC(±10%),2.5A