The FA-WRC1M Wireless Radio Commander from Sony effortlessly slides into the Multi Interface Shoe of your a7 II, a7R II, or a7S II mirrorless camera to work as a reliable remote control for up to 15 separately available FA-WRR1 Wireless Radio Receivers. It can be used to work from up to 30m away without requiring line of sight, thanks to a 2.4 GHz radio system, and has access to 14 channels and up to 5 groups, for precise control over your lights without interference with other radio triggering system. The Wireless Radio Commander also offers remote control over your flashs settings, including exposure compensation, flash power from 1/1 to 1/256, zoom, and more. It has full compatibility with Sonys TTL method and supports High-Speed Sync at up to 1/8000 second. Other flashes can be triggered in a manual mode and a PC sync terminal is available for connecting to various strobes and other lights. It also features a Multi Terminal connector for using the separately available VMC-MM1 Multi Terminal Cable to connect and control other cameras. This Commander unit is dust and moisture-resistant for peace of mind when working in changeable environments, and runs on 2 AA batteries. It comes with a Connector Protect Cap and Case.