RadioMaster AX12 Android Radio Controller ELRS 2.4GHz / Sub-G 900MHz

The RadioMaster AX12 Android Radio Controller is built for pilots and builders who want more than a standard RC transmitter. Combining RadioMasterOS, an Android-based control environment, with built-in ExpressLRS 2.4GHz / Sub-G 900MHz capability, the AX12 gives you a flexible platform for FPV drones, RC aircraft, ground vehicles, boats, robotics, telemetry tools, and supported mission-planning apps. At the center of the AX12 is a bright 5.5-inch HD IPS touchscreen with 1280 × 720 resolution and 1,000 nits brightness, making it easy to view menus, telemetry, apps, and supported video feeds outdoors. With an octa-core processor, 4GB RAM, and 64GB internal storage, the AX12 is ready for compatible Android apps, model setup tools, mapping utilities, and configuration workflows. For control, the AX12 supports up to 16 channels depending on receiver setup and includes advanced transmitter features such as custom curves, mixing, model templates, voice prompts, Lua script support, and channel mapping. The built-in ExpressLRS RF system is based around 2.4GHz or Sub-G 900MHz operation, giving pilots modern low-latency ELRS performance in a compact, touchscreen-equipped radio. The AX12 also stands out as a field-ready video and ground-station tool. HDMI input allows compatible digital video systems to display on the radio’s built-in screen, while HDMI output can mirror the display to an external monitor for teaching, review, team flying, or live demonstrations. MAVLink passthrough support also allows compatible apps such as QGroundControl and Betaflight Configurator to be used directly from the transmitter in supported workflows. Whether you fly FPV drones, long-range aircraft, fixed-wing models, or experimental RC platforms, the RadioMaster AX12 ELRS Android Radio Controller gives you a powerful combination of radio control, touchscreen setup, app support, video display capability, and modern ExpressLRS connectivity. Key Features Android-based RadioMasterOS Built-in ExpressLRS 2.4GHz / Sub-G 900MHz internal RF Up to 16 channels, depending on receiver Bright 5.5” HD IPS touchscreen, 1280 × 720 resolution 1,000 nit display brightness for outdoor visibility Octa-core processor with 4GB RAM / 64GB storage High-precision X5 Hall effect gimbals HDMI input and HDMI output support MAVLink passthrough for supported workflows Wi-Fi, Bluetooth, and USB-C connectivity Nano external module bay Dual built-in 21700 lithium battery system Removable and storable gimbal sticks Specifications Spec Details Product RadioMaster AX12 Remote Controller Protocol ExpressLRS Internal RF ELRS 2.4GHz / Sub-G 900MHz Channels Up to 16, receiver dependent Display 5.5” HD touchscreen, 1280 × 720 Brightness 1,000 nits Device Firmware Android 9.0, not updateable Radio Firmware RadioMasterOS Gimbals X5 Hall effect gimbals Storage 64GB integrated flash External Module Bay Nano module bay Battery Dual 3.7V 21700 lithium batteries, built-in Charging USB Power Delivery compatible power supply required Dimensions 171 × 168 × 73mm Weight 640g Includes 1 × RadioMaster AX12 Radio Controller 1 × AX12 Signature Carry Case 1 × Type-A to Type-C USB Cable 1 × Type-C to Type-C USB Cable 1 × Screen Protector 1 × 1.5mm Hex Wrench 4 × Low Tension Gimbal Springs 2 × AX12 Gimbal Dust Covers 1 × RadioMaster Sticker Set 1 × AX12 Manual 1 × Inventory Card