The ProMaster Wireless Cine Remote Control for Sony provides advanced control of a Sony camera's still and video functions through its multi terminal port, wirelessly, from a great distance.
Its features include:
Shutter button with locking function
Video recording ON/OFF button
Zoom buttons (compatible with power zoom lenses)
Power ON/OFF button
Grid line function button
2.4 GHz wireless frequency
300' / 100 m range