Smart Link is the dedicated app for Maclan Racing competition ESC’s. It allows for a direct USB connection from your mobile devices (Android 5.0 or higher) to setup ESCs. Smart Link has the following functions: 1. ESC Profile load & reset 2. ESC parameters setup 3. ESC online firmware updating 4. ESC data logging display Note: Your esc may need a firmware update via a PC in order to use this app for programming. You will be prompted upon connecting your esc to the Smart Link app is this is