WANSEN PT-04GY Universal 1-to-3 3 Receivers Wireless Flash Trigger for Nikon / Canon - Black
433M wireles control for long working time; 5V-12V wide voltage trigger; 16 channels 30m RC range 1250 sync speed; receiver is powered by 2 x AAA batteries; reliable tapping hot shoe; adapter needed for new released Sony camera; it can work with camera with hot shoe socket; cycling life: 10000 times.