The Radiomaster TX16S MKII 2.4GHz Radio Controller ? 4IN1 Version is an advanced and versatile radio transmitter designed for RC enthusiasts. With its 2.4GHz frequency, it provides a stable and reliable connection. The 4IN1 Version supports multiple protocols, making it compatible with various receivers. It features a large color LCD screen for easy navigation and a comfortable ergonomic design for extended use. The Radiomaster TX16S MKII 2.4GHz Radio controller is a top choice for hobbyists seeking a powerful and flexible control system.