This switch is designed to provide temporary control of the ESC between flying sessions. Without removing the battery pack it cuts off power from the controller's BEC circuitry to the receiver. This will prevent accidental motor runs due to interference or unintentional transmitter control while the plane is in the pits area. The simple plug and play design is compatible with all ESCs. Note: this switch does not disconnect the battery from the ESC. The battery must be removed after flying session to prevent depletion of the battery.