Non contact infrared medical thermometer Model No:AD-801 Measuring accuracy:±0.2 (25-42 ) Operation condition:Temperature: -16-40 Humidity: 85% RH Atmospheric pressure: 70-106kPa Storage rangeTemperature: -20-55 Humidity: 85% RH Atmospheric pressure: 70-106kPa Power source 2X 1.5V AAA batteries