TX15 Radio Controller (ELRS / M2)

RadioMaster continues to redefine the open-source remote control landscape. After years of collaboration with our open-source partners and users, we are proud to introduce the TX15. Driven by the high-performance STM32 H7 chip, it’s the powerhouse behind our fastest radio ever — enabling ultra-smooth EdgeTX control, instant model switching, and lightning-quick script execution. With 4GB of flash storage and MicroSD card expansion, you’ll have virtually unlimited space for models, scripts, sounds, and themes. 

The TX15 features a LR1121 Semtech transceiver, supporting both 2.4GHz or 900MHz ExpressLRS (ELRS) for long-range, low-latency performance. Whether you’re flying daily or operating in challenging RF environments, the TX15 is built to perform. A smart balance battery circuit maximizes flight time, while the compact, foldable antenna design improves portability and ensures strong signal quality. The built-in gyro with TiltX/TiltY functions unlocks advanced control options, allowing you to trigger switches, pan/tilt cameras, or activate telemetry callouts with a simple tilt of your radio.

Experience clear visuals on the 3.5-inch IPS touchscreen with 262k color resolution and 600 nits brightness, visible in sunlight. The TX15 Standard features V5.0 hall sensor gimbals in six vibrant colors. It’s advanced cooling, a USB-C port for charging, SIM connectivity, firmware updates, and high-speed memory access ensure reliable performance. We’ve included additional switches so you can swap out the shoulder buttons with either a momentary or two-position latching switch—perfect if you prefer a traditional switch over a button. Want a premium upgrade? Check out the TX15 MAX. 

Step into the future. TX15: The Future Is Here, One Step Ahead.

Launch Video

Features

• Blazing-Fast Performance: The STM32 H7 chip powers our fastest radio ever.
• Touchscreen Display: 3.5-inch, 480 x 320 IPS touchscreen with vivid colors and sharp detail.
• Precision Gimbals: V5.0 Hall sensor gimbals
• Built-in ExpressLRS: 2.4GHz / Sub-G 900MHz ExpressLRS integration for reliable and long-range control.
• Smart Balance Battery Circuit: Maximizes battery efficiency and longevity for more flight time.
• Powerful, Efficient Cooling System: Low noise, high output fans and an aluminium heat sink keep your radio cool even on the hottest days.
• Foldable Antenna: Compact and easy to store without compromising signal strength.
• Built-in Microphone: For future feature expansion.
• Built-in Gyro: Trigger switches, pan/tilt cameras, or telemetry callouts simply by tilting your radio.
• Memory: Integrated 4GB of onboard flash memory and external MicroSD card support.
• Interchangeable Shoulder Switches: Customize your controls to match your flying style.
• Optional colors: Iron Grey / Frost White / Iceberg Blue / Mint Mist / Lemon Twist Yellow / Hot Pink

Specifications

• Item: TX15 Radio Controller
• Size: 178*168*81mm
• Weight: 605g (without battery)
• Frequency: 2.400GHz OR Sub-G 900MHz
• Internal RF: ELRS 2.4GHz / Sub-G 900MHz
• Supported Protocols: Express-LRS
• Cooling Fan: Yes
• Transmitter Module: Built-in ELRS
• Built-in Flash Size: 4GB
• Built-in Microphone: Yes (Future expansion)
• Built-in Gyro: Yes (ICM-42607-C)
• MicroSD card (Not included): 32GB/FAT32 (Inserting a MicroSD card will disable the onboard flash)
• Antenna Gain: 2dB (transmit power adjustable)
• Current: 875mA at max power output
• Voltage Range: 6.6 – 8.4V DC
• Radio Firmware: EdgeTX (Transmitter) (requires version 3.0.0 or later)
• Module Firmware: ExpressLRS
• Channels: Max 16 channels (Receiver dependent)
• 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: V5.0 Hall sensor gimbals (standard)
• Gimbal Sticks: M4
• Upgrade Method: USB-C (UF2)
• Module Bay: JR-compatible module bay for additional modules

Gimbal Adjustment

Dimensions

User Manual

• TX15 User Manual
• TX15 Downloads

Associated Products

• TX15 Radio
• TX15 Max Radio
• AG02 CNC Hall sensor gimbals
• LED Gimbal Rings
• 18650 3200mAh 3.7V Battery
• 21700 5000mAh Battery
• SE/SF 3 Position Assembly for TX15 Radio

Package Includes

• 1 * TX15 Radio Controller
• 1 * Signature Carry Case
• 1 * Short 2-position Latching Shoulder Toggle Switch Assembly
• 1 * Short 2-position Momentary Shoulder Toggle Switch Assembly
• 1 * 18650 Battery Tray
• 1 * USB-C Cable
• 1 * Screen Protector
• 1 * 1.5mm Hex Wrench
• 4 * High Tension Gimbals Springs
• 2 * Gimbal Stick Set Screw
• 1 * Stickers Set
• 1 * User Manual
• 1 * Inventory Card

TX15 is installed with ExpressLRS as standard.

ExpressLRS is an open-source, high-performance radio control link that delivers exceptional range and low-latency communication using advanced LoRa technology. It’s highly customizable and perfect for RC enthusiasts looking for reliability and efficiency.

Pair your ExpressLRS with Radiomaster’s top-tier transmitters and receivers. Radiomaster products are designed to maximize the benefits of ExpressLRS, offering state-of-the-art performance for your RC adventures. Upgrade your RC experience with the unbeatable combination of ExpressLRS and Radiomaster—engineered for excellence and tailored for you.

Find out more about ExpressLRS here

The TX15 is now compatible with mLRS!

The mLRS project offers an open-source, high-performance radio system based on LoRa technology, operating at 2.4 GHz, 915/868 MHz, and 433 MHz/70 cm, designed to deliver a secure, reliable, and robust link under any conditions.

While designed initially with MAVLink optimization in mind, mLRS always provides a transparent serial link, making it suitable for a wide range of applications. Its design ensures the strongest possible signal integrity while maintaining a relatively high data rate, balancing performance and reliability without compromise.

Find out more about mLRS here

Get the mLRS flasher desktop app here