studio flashlight studio flash,studio equipment SM series flash light MODELSM-150SM -180SM -200SM -250SM -300SM -400FLASH GUIDE NUMBERGN32GN38GN42GN52GN54GN62RECYCLE TIME1-2S1-2S1-2S1-2S1-2S1-2SFLASH POWER RANGE4-stop aperture ,1/8-1/1MODELING LAMP POWER 75W-100WCOLOR TEMPERATURE5200-5600KFLASH TRIGGERING METHODPhotocell/Test Button/Receiver & Remote Controller)TRIGGERING VOLTAGE5VSYNC DISTANCE≤20mOVER-HEAT PROTECTIVE DEVICEYESYESYESYESYESYESCOOLING FANYESYESYESYESYESYESWORKING VOLTAGE180V-250V,50Hz/100V-120V.60Hz