The Sony-compatible RF-603S II S2 Wireless Flash Trigger Kit from Yongnuo includes two 16-channel transceivers. As transceivers, both devices can function as a transmitter or receiver for triggering strobe flashes. With a simple hot shoe mount, the devices can easily connect to your Sony camera, but also includes a PC sync option with a 2.5mm port, as well as a shutter release cable for more remote shooting options.
With flash sync speeds up to 1/320 seconds, this kit is ideal for photographers working in nightlife, live events, and sports photography. The 2.4 GHz system has a wireless range of 328' and has a dual-function shutter release that can be triggered by both half-presses and full-presses. Each trigger runs on two separately available AAA batteries.