It provides ideal luminous source for indoor photography.This series AC slave flash features big flash indexes,high sensitivity,short charging time and free from other illuminating lamps' interference.It can be used as key lights,filling lights,edge lights,top lights and footlights.Features: Appropriate Color Temperature Big Flash Indexes, High Sensitivity, Short charging time Varied Mode of trigger Can be used as key lights, filling lights, edge lights, top lights and footlights Slave temperature: 5600/200K Power Voltage: AC100-120V/60Hz Recycle time: 1~2 sec