AX12 Android Radio Controller
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AX12 — A New Generation of Smart RC Control
The RadioMaster AX12 combines advanced Android technology with RadioMaster's trusted radio control expertise, creating a powerful and versatile transmitter platform for modern RC enthusiasts.
Featuring RadioMasterOS, built-in ExpressLRS connectivity, HDMI video support, powerful computing hardware, and full Android app compatibility, the AX12 opens up new possibilities for pilots, creators, rover builders, boat enthusiasts, and advanced RC applications.
Designed for those who demand more from their radio system, the AX12 delivers the flexibility of Android with the precision, reliability, and RF performance that RadioMaster is known for.
RadioMasterOS — A Smarter RC Operating Experience
The AX12 introduces RadioMasterOS, an Android-based operating system designed specifically for radio control applications.
Unlike traditional radios with limited interfaces, the AX12 combines touchscreen convenience with professional RC functionality, allowing users to configure models, monitor telemetry, access compatible Android applications, and manage advanced workflows directly from the transmitter.
With an open Android foundation, the AX12 provides a more intuitive and expandable control experience without sacrificing reliable RC performance.

64-bit Android Operating System
The AX12 combines RadioMaster's proven radio control system with RadioMasterOS, an Android-based platform that simplifies setup, configuration, and field operation—without compromising reliable control.

Multi-Core GPU
Powerful GPU performance — smooth, low‑latency rendering for telemetry, live HDMI video, and Android apps on the ultra‑bright 5.5" HD touchscreen. Handles multitasking, hardware-accelerated video decoding, and responsive UI animations for an immersive, lag‑free field experience.

4GB RAM & 64GB Storage
An octa-core processor, 4GB of RAM, and 64GB of storage deliver smooth performance for control tasks, telemetry viewing, supported ground station apps, and utilities.

5.5" HD Touchscreen
The 5.5" HD IPS touchscreen (1280x720) delivers sharp visuals and 1000 nits brightness for excellent visibility even in direct sunlight. The responsive touchscreen interface makes navigating menus and adjusting settings quick and intuitive in the field.

Bluetooth & Wi-Fi Connectivity
Seamless device pairing and high‑speed connectivity for telemetry, app downloads, MAVLink passthrough, and OTA updates. Connect controllers, phones, headsets, and ground‑station apps wirelessly for flexible, cable‑free workflows in the field.

X5 High-Precision Hall Gimbals
Contactless, high precision control with smooth centering, exceptional longevity, and finely tuned stick response for confident inputs. Removable and storable sticks make transport simple and protect the gimbals during travel, while the Hall sensor design minimizes wear for consistent, repeatable performance across thousands of flights.

Power, Modules, and Custom Controls
The AX12 features a flexible nano-module interface, built‑in ExpressLRS with up to 16‑channel output, voice prompts and programmable buttons, and a high‑capacity dual 21700 battery system for extended, versatile field use.

ExpressLRS Support
The built- in ExpressLRS LR 1121 module supports 2.4GHz or Sub-G 900MHz operation with low latency and strong link performance and supports Wi-Fi OTA firmware updates for the internal RF module. MAVLink passthrough enables compatible apps, such as QGroundControl and Betaflight Configurator, to be used directly on the radio for supported workflows.

Mobile Mission Control
Run Betaflight Configurator, QGroundControl, and other Android-compatible ground‑station apps directly on the radio using Wi‑Fi MAVLink passthrough or USB‑C OTG. Tune, plan missions, and view real‑time telemetry in the field—no extra devices or laptop required.

HDMI Input & Output
View digital video feeds from compatible systems directly on the AX12 screen or mirror the display to an external monitor or projector for review, instruction, or streaming — perfect for instructors, spotters, or backup monitoring during flights.

Specifications
| Parameter | Details |
|---|---|
| Item | AX12 Remote Controller |
| Working Current | 1.10A (at max output power) |
| Frequency | 2.400GHz OR Sub-G 900MHz |
| Internal RF | ExpressLRS 2.4GHz / Sub-G 900MHz |
| Supported Protocols | Express-LRS |
| Channels | Up to 16 (depending on receiver) |
| Display | 5.5" HD Touchscreen (1280×720) / 1,000 nits brightness |
| Device Firmware | Android 9.0 (can not be updated) |
| Radio Firmware | RadioMaster OS |
| Charging | USB Power Delivery (PD) compatible power supply is required for charging |
| Gimbals | High-precision X5 hall effect gimbal |
| Gimbal Sticks | Removable and Storable |
| Internal Storage | Integrated 64GB of onboard flash memory |
| External Module Support | Nano module bay (STM32 based modules not supported) |
| Battery | Dual 3.7V 21700 lithium batteries (built-in) |
| Firmware Upgrade | Online automatic updates via Wi-Fi |
| Dimensions | 171*168*73mm |
| Weight | 640g |
Resources & Downloads
-
AX12 User Manual
Complete setup guide and operating instructions.
Associated Products
Package Includes
- 1 * 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 Gimbals Springs
- 2 * AX12 Gimbal Dust Cover
- 1 * RadioMaster Sticker Set
- 1 * AX12 Manual
- 1 * Inventory Card