Daylite Monolights KL-D series are clearly designed for professional use. They are available in four models providing output in 150 w.s.,300w.s.,600w.s.. Each light has a proportional halogen modeling lamp which will be reduced in intensity to retain the flash/modeling ratios, Steplessly variator from the full down to 1/8,audible flash-ready signals and built-in slave. Both flash tube and modeling lamp are easily replaceable and the unit will sound an audible beep after recycling indication the unit ready to fire again. KL-6D, with cooling fan to reduce the heat of modeling lamp so that it is suitable for long time operation, and KL-2D, KL-4D are available with optional cooling fan. Also can be fitted with remote controller to eliminate the need for the bothersome sync. cable which is often the source of erroneous flash triggering.