The BT-400 is a floor-standing, mobile neonatal phototherapy unit that delivers a narrow band of high-intensity blue light via blue light emitting diodes (LEDs) for the treatment for neonatal hyperbilirubinemia. It is useful for infants up to the age of three months and weighing less than 10 kg and can be used in a bassinet, incubator, open bed, or radiant warmer.