Our synchronization (SYNC) accessory bundles a handful of tools to meet your multi-device and third-party device synchronization needs. The SYNC kit allows the user to connect multiple Professional or Researcher Kits together to collect up to 24 channels at the same time (by connecting up to 3 HUBs together). In addition, a trigger device is included, which is useful to begin acquisition via Bluetooth to OpenSignals or stored the memory card so no Bluetooth connection is required. The LED is useful for synchronization to external devices and Video. All the parts connect to the digital port on the HUBs.