DISONTMAD Series Studio Strobe Flash Lighting Light has the feature as follow: new type delicate circuit layout,fast recycling time,accurate color temperature,etc. DISONTMflash strobe unit is designed for photographers seeking a high quality entry level studio equipment at an affordable price. This studio light can control the lighting depends on the cameraman's mind from 1/8 power to maximum. There are two ways to control the light. One is using a sync cable connect with the light which can control directness synchronously. There is a test button on the light where you can know whether the light is connected or not. Another is optical control, while the flashgun is working, the optical receiver on the light will receive it and control the lamp work synchronously.Note: the reflector in the flash is not included! Specification Model AD-300 AD-400 AD-600 AD-800 Output Power 300WS 400WS 600WS 800WS Guide No. 58GN 68GN 78GN 90GN Color Temperature 5500±200KOutput Control Stepless 1/8 to fullRecycling Time 1SModeling Light 150WSupply Voltage AC 220-240V