The Sidus Link Bridge is a 2.4GHz RF/Bluetooth intermediary wireless transceiver that allows users to connect their legacy 2.4GHz Aputure lighting fixtures with the Sidus Link mobile app. The Sidus Link mobile app is one of the latest innovations in the Aputure ecosystem, allowing you to control devices such as the LS C300d II and Aputure MC, the first two fixtures to be released with Sidus Mesh compatibility, from your smartphone or iPad. The Sidus Mesh Network and Sidus Link App also allow compatible Aputure lights to gain access to new features, such as advanced FX control, and groundbreaking functions like the Color Picker or Source Match tools.