The Elinchrom Transmitter Plus is a universal transmitter that is compatible with most cameras with a classic hot shoe. However, the specific functions such as Hi-Sync or TTL are only available with certain cameras, which are listed on the Elinchrom website. For Sony cameras such as the a7C, compatibility with the Transmitter Plus in terms of Hi-Sync or TTL is not explicitly confirmed, as these functions are mainly supported for Nikon, Canon, Sony and Fujifilm with the Transmitter Pro. However, the Transmitter Plus can generally be used to trigger flash units as long as the camera supports a standard sync mechanism.