Phottix Strato II Multi 5-in-1 Trigger Set for Nikon CamerasThe Strato II Multi is a flash trigger and it can be used as a wired or wireless shutter release. The Phottix Strato II Multi 5 in 1 Wireless Trigger System allows photographers to wirelessly trigger Hot Shoe Flashes, manual studio lights. You can also control a combination of both by providing a choice of four channels over four separate groups. Transmitter and Receiver The 2. 4 GHz transmitter and receivers offer ranges of more than 150 meters and