Special attention: the maximum power of the transformer cannot exceed 10W.Input voltage: 110V / 50//60Hz(Red),Output voltage:24V 10VA(Blue). two red lines are input lines and two blue lines are output lines.This transformer is only used for AC to AC Product name:Power Transformer,Structure: single phase transformer. Total Size: 75x44x42mm/2.9''x1.7''x1.6''(L*W*H). wires length: 18cm/7.1''. Weight: about 360g. Wide range of uses: power transformers can be used in voltage transformation occasions such as audio and lighting power supplies. Product package:1xPower Transformer.If there is any problem with the switch you received, please contact me by email in time and I will reply you within 24 hours.