RadioMaster GX12 Dual-Band Gemini-X Radio Controller (ELRS, M2)

The RadioMaster GX12 is a dual-band ELRS radio controller for FPV pilots who want one transmitter that covers both 868/915MHz long-range setups and 2.4GHz builds. With Hall-effect gimbals, a built-in display and a compact handheld layout, it suits acro flying, mixed-fleet use and pilots who prefer one all-in-one radio.

Key features

• Dual 1W Gemini Xrossband ExpressLRS transmission for extended range and link redundancy across both bands.
• Integrated foldable dual-band antennas for compact transport and storage.
• CNC-aluminium GX01 Hall-effect gimbals with 1000Hz digital sampling and EdgeTX sync.
• Foldable gimbal sticks and removable switch panels for a customisable, travel-friendly layout.
• DIY SMA antenna ports and a built-in OLED display for on-radio status and configuration.

The removable switch panels and DIY SMA ports mean the physical control layout and antenna choice can be adjusted for a given discipline, from acro freestyle to long-range cruising, without buying a second radio.

Specifications

• Protocol: ExpressLRS (Gemini Xrossband)
• Frequency: 2.4GHz and 868/915MHz
• Gimbals: Hall effect, CNC aluminium
• RF output: dual 1000 mW
• Radio firmware: EdgeTX (transmitter), ELRS (RF module)
• Channels: up to 16 (receiver dependent)
• Display: 128 x 64 monochrome OLED
• Internal storage: 512 MB flash (no microSD card needed)
• Connectivity: USB-C (charging, simulator, firmware updates, storage access)
• Battery: 2S LiPo, two 18650 Li-ion cells or a 21700 5000 mAh cell (not included)
• Charging: built-in 2S smart balance charging
• Input voltage: 6.6-8.4 V DC
• Current draw: 390-1000 mA depending on RF output
• External module bay: Nano / Crossfire-compatible
• Size: 183 x 148 x 78 mm
• Weight: 573 g