Radiomaster GX15 MAX Radio Controller (ELRS / M2)

Description

RadioMaster expands the GX series with the GX15 MAX. Designed for pilots who fly RC airplanes, gliders, helicopters, and other traditional aircraft, the GX15 MAX combines modern performance with premium materials and refined controls for pilots who demand the highest level of precision and feel.

For pilots who prefer the same core performance in a more accessible configuration, the standard GX15 is also available.

Features

High-Performance Processor: STM32 H7 processor delivers fast and responsive system performance.
Touchscreen Display: 3.5-inch IPS touchscreen (480 × 320) with 262K colors and up to 600 nits brightness for clear outdoor visibility.
Premium Gimbals: AG02 CNC aluminum Hall-effect gimbals.
Dual 2.4GHz ExpressLRS (Gemini): Powered by dual 250mW SX1281 transceivers, the GX15 delivers reliable Gemini performance while supporting ultra-fast ExpressLRS update rates, including F1000 operation with compatible receiver systems.
Intelligent Battery Management: Optimizes power usage and extends operating time.
Efficient Cooling System: Low-noise fan with aluminum heat sinks ensures stable operation in demanding conditions.
Dual Integrated 2.4GHz Antennas: Internal horizontal and vertical antenna arrangement provides polarization diversity while maintaining a clean, antenna-free exterior.
CNC Controls: Aluminum buttons and precision scroll wheel.
Built-in Microphone: Reserved for future feature expansion.
Built-in Gyroscope: Enables tilt-based control inputs for switches, gimbals, and telemetry functions.
Storage: Built-in flash memory with external SD card support.
Interchangeable Shoulder Switches: Configurable control layout with replaceable switch modules.
Premium Case: Carbon-look shell for improved finish and style.
Multiple Color Options: Available in five color variants: Black / Transparent Charcoal / Red / Gold / Blue.

The GX15 MAX features a top-mounted 3.5-inch IPS touchscreen with 262K colors and up to 600 nits brightness. Positioned above the controls, the display keeps telemetry, timers, and flight information easily visible throughout flight, allowing pilots to monitor critical data without their hands obstructing the screen.

Firmware Versions – FCC and EU LBT: Our stock is supplied with EU LBT firmware. Radios can be reflashed to FCC or vice versa, the hardware itself is not restricted. Please check the supported protocols below.

Standard FCC Version

ELRS (FCC) is pre-installed witn ExpressLRS ISM FW (Max power is hardware dependant)

EU LBT Version

ELRS LBT (Europe) Version is pre-installed with ExpressLRS CE EU domain LBT FW (Limited to 100mw power output)

Associated Products

Specification

Item: GX15 MAX Radio
Color: Black / Transparent Charcoal / Red / Gold / Blue
Voltage Range: 6.6 – 8.4V DC
Current: 850mA (at max output power)
Frequency: 2.400GHz
Internal RF: ExpressLRS 2.4GHz
Channels: Max 16 channels (Receiver dependent)
Radio Firmware: EdgeTX (Transmitter) (requires version 2.12.0 or higher)
Built-in Flash Storage: 512MB
Cooling Fan: Yes
Built-in Microphone: Yes (Future expansion)
Built-in Motion Sensor: Yes
MicroSD card (Not included): 32GB/FAT32 (Inserting a MicroSD card will disable the onboard flash)
Display: 3.5-inch IPS touchscreen (480 x 320 resolution)
Battery: 7.4V 2-cell Lithium-Polymer / Two 3.7V 18650 Lithium-Ion cells / 21700 5000mAh Battery (batteries not included)
Connectivity: USB-C
Gimbals: AG02 CNC Hall sensor gimbals
Gimbal Sticks: M4
Upgrade Method: USB-C (UF2)
Module Bay: JR-compatible module bay for additional modules
Dimensions: 178*168*81mm
Weight: 725g (without battery)

Included:

1 x GX15 MAX Radio Controller
1 x GX15 MAX Signature Carry Case
1 x 18650 Battery Tray
2 x Replacement Shoulder Panels
1 x Type-C Cable
1 x Screen Protector
1 x 1.5mm Hex Wrench
4 x Low Tension Gimbals Springs
2 x Gimbal Stick Set Screws
4 x 6mm Switch Delete Gromets
1 x Lanyard
1 x RadioMaster Sticker Set
1 x GX15 Manual
1 x Inventory Card

Downloads

Manual (pdf, 6629KB)

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Videos

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Shipping

SHIPPING & DELIVERY

We are based in the UK and ship to most destinations worldwide.

We dispatch orders during the times shown on our Dispatch Schedule. Orders placed before the daily dispatch cutoff will ship the same day (subject to stock availability). Orders placed after the cutoff will ship on the next scheduled dispatch day.

A confirmation email is sent once your order has been packed. If you need to amend your order, please contact us as soon as possible — once shipped, we’re unable to make changes.

We work with trusted delivery partners including Royal Mail, DHL, UPS, Fedex and Parcelforce. If you have a delivery requirement or would like to arrange collection, please get in touch.

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Shipping to the UK

Order before the daily dispatch cutoff for same day dispatch.
FREE delivery available on qualifying orders over £99 (under 1kg).

For small, low-value orders, Royal Mail First Class is our most economical option. Royal Mail Tracked 24 is the most popular choice, offering full tracking and flexible delivery options. For guaranteed next working day delivery, we recommend Royal Mail Special Delivery.

Royal Mail delivers to residential addresses Monday to Saturday, while courier services (including DHL) typically deliver Monday to Friday.

International Postage

USA orders: Import duties and taxes are prepaid by us — no additional customs charges on delivery.
Other destinations: Customs duties or import taxes may apply and are the responsibility of the recipient.

Smaller, lower-value orders may be sent via Airmail or tracked postal services. Economy road and express air courier options are available depending on destination. For faster delivery, we recommend express air courier services such as DHL Express, which typically deliver within 1–2 working days across Europe and a few working days for most other destinations.