The Godox X2 2.4 GHz TTL Wireless Flash Trigger is dedicated to Sony's TTL system and operates on a 2.4 GHz frequency. The wireless flash trigger can fire a single flash or multiple dedicated flash units within 5 groups, 32 channels, and 99 ID settings to avoid interference from other nearby systems. For the added convenience, the integrated scan setting function can help you automatically locate an ID channel with the least interference. You can also operate the flash units within a wireless range up to 328'. All the settings are easily viewed on the trigger's large LCD display, which can be backlit along with the group and function buttons. A USB Type-C port is located on the side of the wireless trigger to download firmware updates as is a 3.5mm sync socket to connect non-TTL flashes or to fire cameras via a remote camera cord. The downloadable GodoxPhoto app is compatible with iPhone or Android smartphones or tablets while operating the triggers via Bluetooth. The app can control the same functions as the wireless trigger such as the flash mode, power output, the modeling light, high speed sync, and the audible beep of Godox flashes.