Specifications: Measuring Range : Human Body / Forehead : 32.0'c ~ 42.9'c Accuracy : _+0.3'c (0.54'F) Measuring Distance : 5~8cm ( 2~5.9in) Automatic Stop : 5sec Response Time : 0.5sec Resolution : 0.1'c (0.1'F) Operating Temperature:10'c~40'c Power Supply : DC 3V(2batteries AA)