RadioMaster TX15 ELRS/M2 Radio Controller, 2.4GHz/Sub-G 900MHz EdgeTX Touchscreen for RC Models

Overview

The RadioMaster TX15 is a radio controller (ELRS / M2) designed for controlling RC models with EdgeTX. It is powered by an STM32 H7 processor (STM32H750) and integrates a Semtech LR1121 transceiver for ExpressLRS on 2.4GHz or Sub-G 900MHz. Storage is provided via onboard flash plus MicroSD card expansion, and control is centered around a 3.5-inch IPS touchscreen (480 x 320) with 262K color and 600 nits brightness for outdoor visibility.

For help with setup, firmware, or accessories, contact support@rcdrone.top or visit https://rcdrone.top/.

Key Features

• Processor: STM32 H7 (STM32H750)
• Internal RF: ExpressLRS using Semtech LR1121; operates on 2.4GHz or Sub-G 900MHz
• EdgeTX radio firmware (requires version 3.0.0 or later)
• Display: 3.5-inch IPS touchscreen, 480 x 320 resolution; 262K color; 600 nits
• Gimbals: V5.0 Hall sensor gimbals (standard); quad precision bearings
• Cooling: low-noise, high-output fans with an aluminium heat sink
• Foldable antenna; antenna gain 2dB (transmit power adjustable)
• Smart active balance charging (prevents overcharging, extends battery life)
• Storage: built-in flash memory; MicroSD support (MicroSD not included)
• Built-in motion sensor (ICM-42607-C) with TiltX/TiltY functions
• Built-in microphone (for future expansion)
• Six customizable RGB buttons
• External module support: JR-compatible module bay for additional modules
• Single USB-C port supports data transmission, charging, and simulator use (USB Joystick (HID) / USB Storage (SD) / USB Serial (VCP))
• Anti-slip back grip
• Replaceable shoulder switches included (additional options sold separately)
• Color options: Iron Grey / Frost White / Iceberg Blue / Mint Mist / Lemon Twist Yellow / Hot Pink

Specifications

Gimbal Adjustment

• 1/2 Stick travel limiter: turn counterclockwise to increase travel; turn clockwise to decrease travel
• 3 Horizontal axis tensioner (left-right): turn clockwise to increase stick tension; turn counterclockwise to decrease stick tension
• 4 Gimbal mode setting: turn clockwise to disable self-centering (Throttle); turn counterclockwise to enable self-centering (Elevator)
• 5 Vertical axis tensioner (up-down): turn clockwise to increase stick tension; turn counterclockwise to decrease stick tension

What’s Included

• 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

Applications

• EdgeTX-based control for RC models requiring an ExpressLRS link (receiver dependent)
• USB simulator use via USB Joystick (HID)
• External module expansion via JR-compatible module bay

Manuals

• TX15 Radio User Manual (PDF)

Project Links (Informational)

• ExpressLRS documentation
• mLRS project
• mLRS Web Flasher

Details

Choose your look from six color options while keeping the same EdgeTX touchscreen TX15 platform.

An STM32H750 (H7) processor powers fast EdgeTX operation and responsive UI navigation.

Built-in Semtech LR1121 ExpressLRS supports 2.4GHz or sub‑G 900MHz for flexible link setups.

A 3.5-inch IPS touchscreen (480×320) with 600 nits brightness stays readable outdoors.

Low-noise fans and an aluminium heat sink help keep the transmitter cool during long sessions.

V5.0 Hall sensor gimbals with quad bearings deliver smooth, precise stick control.

Smart active balance charging helps protect dual 18650 batteries from overcharging.

Use onboard flash or expand storage via MicroSD (card not included) for models and logs.

A foldable antenna makes the TX15 easier to pack while supporting 2.4GHz or sub‑G 900MHz operation.

Extra touches include an anti-slip grip, six customizable RGB buttons, JR module bay support, and replaceable shoulder switches.

One USB‑C port handles charging, data transfer, and simulator connectivity (HID/SD/VCP).

Iron Grey, Frost White, Iceberg Blue, Mint Mist, Lemon Twist Yellow, and Hot Pink finishes are available.

Gimbal adjusters allow travel limiting, tension tuning, and mode changes for personalized stick feel.

Compact form factor measures 178 × 168 × 81 mm for a comfortable hand fit and easy transport.

Included in the box: TX15 radio, signature carry case, USB‑C cable, 18650 battery tray, tools, and documentation.