To accurately measure the intensity of neoBLUE LED Phototherapy Systems - provides precise measurement of light in the blue spectrum to ensure optimal phototherapy treatment. The neoBLUE radiometer measures spectral irradiance of LED light sources in the blue spectrum. The neoBLUE radiometer is intended for use with the neoBLUE LED Phototherapy product line, including the neoBLUE, neoBLUE mini, neoBLUE cozy & neoBLUE blanket devices. Measures action spectrum of bilirubin â 420 to 500 nm.