Castle Creations Field Link Programmer Full Castle Link Functionality This Field Link portable programmer can also act as a Castle Link USB Programming kit, allowing you to connect your controller to your Windows PC for easy programming. Adjustable settings include: Access expanded programming and parameters for Castle controllersAccess to all firmware updates, including added features sets released from Castle Engineering, at no charge.Intuitive Demo Mode capabilityAbility to default ESC to factory settingsAbility to save setup profiles for later useAbility to download and view data logs (on applicable controllers) Field Link Portable Programmer allows you to modify the most commonly used settings in your Castle controller at the touch of a single button. Field Link for Flying settings: Cutoff voltageAuto LiPo volts per cell (3.0, 3.1, 3.2, 3.3, 3.4, 3.5)Low voltage cutoff typeBEC voltage setting*Motor timing*Motor directionThrottle type*BrakeGovernor gain*