□ show that the use of each light source, the name and number of switches □ automatic light switch, the same color with different spectral function □ without preheating, not flashing, can guarantee fast and reliable evaluation of color □ small energy consumption, fever (without heat), the luminous efficiency □ configuration package of Britain, the United States used the standard light source □ the United States contain A standard light source and 30 U □ Source Name change, the replacement of more convenient source □ TAYOLE high standards of international brands