Transmitter for all Hensel flashes with integrated freemask function: Integra Plus, Expert D, Nova D/DL, Porty L, Speed Max and Tria 24SF. Transmits an addtional trigger signal for the background light to create automatic masks with Mask Integrator, in Photoshop or similar photo editing software. 3 channels & all, also includes remote control for flash power and model light. Max. working distance approx. 25 m.